Climatological Report (Annual)
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000
CXUS53 KIWX 011355
CLASBN

CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
830 AM EST FRI JAN 1 2016

...................................

...THE SOUTH BEND CLIMATE SUMMARY FOR THE YEAR OF 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             109   07/24/1934
 LOW              -22   01/20/1943
                        01/25/1897
HIGHEST            94   08/02        MM      MM       91
LOWEST            -12   02/20        MM      MM      -14
AVG. MAXIMUM     59.6              58.8     0.8     56.9
AVG. MINIMUM     40.6              40.8    -0.2     38.2
MEAN             50.1              49.8     0.3
DAYS MAX >= 90      8               9.7    -1.7        4
DAYS MAX <= 32     51              44.6     6.4       69
DAYS MIN <= 32    116             122.7    -6.7      134
DAYS MIN <= 0      12               5.3     6.7       19

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        55.61   1990
 MINIMUM        25.15   1963
TOTALS          36.30             38.00   -1.70    41.44
DAILY AVG.       0.10              0.10    0.00     0.11
DAYS >= .01       138             145.4    -7.4      157
DAYS >= .10        69              78.3    -9.3       80
DAYS >= .50        26              23.4     2.6       28
DAYS >= 1.00        9               7.2     1.8        9

SNOWFALL (INCHES)
RECORDS
 TOTAL          141.7   1978
TOTALS           75.1              66.6     8.5     98.7
SINCE 7/1        10.5              22.5   -12.0     19.5
SNOWDEPTH AVG.      1                MM      MM        0
DAYS >= TRACE      62              44.9    17.1       78
DAYS >= 1.0        19              20.4    -1.4       32
GREATEST
 SNOW DEPTH        15   02/02                          8

DEGREE_DAYS
HEATING TOTAL    6056              6298    -242     6887
 SINCE 7/1       1853              2391    -538     2420
COOLING TOTAL     784               773      11      771
 SINCE 1/1        784               773      11      771
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    39/240    DATE  12/24
HIGHEST GUST SPEED/DIRECTION    55/240    DATE  12/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR          152
NUMBER OF DAYS PC            120
NUMBER OF DAYS CLOUDY         93

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     MIXED PRECIP               0
HEAVY RAIN               23     RAIN                      43
LIGHT RAIN              115     FREEZING RAIN              2
LT FREEZING RAIN          5     HAIL                       0
HEAVY SNOW                7     SNOW                      13
LIGHT SNOW               57     SLEET                      1
FOG                     184     FOG W/VIS <= 1/4 MILE     24
HAZE                     91

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

SOUTH BEND 2015 REVIEW

THE AVERAGE ANNUAL TEMPERATURE AT SOUTH BEND INTERNATIONAL AIRPORT
WAS 50.1 DEGREES...JUST 0.3 DEGREES ABOVE NORMAL. THIS TIED WITH
1955 AND 1971 AS THE 33RD WARMEST YEAR ON RECORD. PRECIPITATION WAS
36.30 INCHES
...1.70 INCHES BELOW NORMAL. THIS RANKED AS THE 54TH WETTEST YEAR.
SNOWFALL FOR THE YEAR WAS 75.1 INCHES...8.5 INCHES ABOVE NORMAL.
THIS RANKED AS THE 30TH SNOWIEST YEAR ON RECORD.

THE HIGHEST TEMPERATURE FOR THE YEAR WAS 94 DEGREES. THIS TIED AS
THE 27TH COOLEST HIGH TEMPERATURE FOR A YEAR ON RECORD. THERE WERE 9
DAYS THIS YEAR WITH 1 OR MORE INCHES OF PRECIPITATION. THIS RANKED
25TH ALL TIME. THERE WAS ONE DAY WITH 2 INCHES OR MORE OF
PRECIPITATION. THIS RANKED 27TH ALL TIME.

BELOW IS A MONTH BY MONTH REVIEW OF THE WEATHER IN 2015

JANUARY

JANUARY 2015 WAS RELATIVELY QUIET AND NORMAL WITH PERIODS OF COLD
AND SNOWY WEATHER...BUT NO STRONG STORM SYSTEMS LIKE 2014.
TEMPERATURES AND PRECIPITATION ENDED UP SLIGHTLY BELOW NORMAL BUT
SNOWFALL WAS ABOVE NORMAL.

THE AVERAGE MONTHLY TEMPERATURE WAS 22.5 DEGREES...1.9 DEGREES BELOW
NORMAL. THIS RANKED AS THE 38TH COLDEST JANUARY ON RECORD. THE
WARMEST TEMPERATURE WAS 46 ON THE 17TH AND THE COLDEST WAS NEGATIVE
9 ON THE 8TH. THERE WERE SIX DAYS WITH A LOW TEMPERATURE OF ZERO OR
COLDER. PRECIPITATION WAS 1.92 INCHES...0.37 INCHES BELOW NORMAL.
THIS RANKED AS THE 49TH DRIEST JANUARY ON RECORD. SNOWFALL FOR THE
MONTH WAS 22.1 INCHES...1.5 INCHES ABOVE NORMAL. THIS RANKED AS THE
35TH SNOWIEST JANUARY ON RECORD.

FEBRUARY

FEBRUARY BEGAN WITH A POWERFUL WINTER STORM THAT DROPPED RECORD
SNOWFALL ACROSS THE MICHIANA AREA. THIS SET THE STAGE FOR A VERY
COLD AND SNOWY MONTH WITH SEVERAL RECORDS BEING BROKEN FOR BOTH SNOW
AND COLD. THE SECOND HALF OF FEBRUARY WAS THE COLDEST ON RECORD.
FITTINGLY...THE MONTH ENDED AS IT STARTED WITH SNOW DURING THE FINAL
HOURS.

A RECORD SNOWFALL OF 14.7 INCHES OCCURRED ON THE FIRST DAY OF THE
MONTH...BREAKING THE OLD RECORD FOR THIS DATE BY MORE THAN 6 INCHES.
THIS WAS ALSO THE HIGHEST SINGLE DAY SNOWFALL FOR ANY DAY IN
FEBRUARY AND RANKED AS THE 8TH HIGHEST SINGLE DAY SNOWFALL FOR ANY
MONTH AT SOUTH BEND.

BRUTALLY COLD ARCTIC AIR ARRIVED ON THE 12TH AND REMAINED ENTRENCHED
ACROSS THE REGION THROUGH THE END OF THE MONTH. EVERY DAY FROM THE
12TH TO THE 28TH OF FEBRUARY HAD AN AVERAGE DAILY TEMPERATURE BELOW
NORMAL. ALL BUT THREE DAYS IN THIS STRETCH HAD AN AVERAGE
TEMPERATURE OF AT LEAST 10 DEGREES BELOW NORMAL AND 9 DAYS SAW THE
AVERAGE TEMPERATURE 20 DEGREES OR MORE BELOW NORMAL. THIS STRETCH OF
FEBRUARY FROM THE 12TH TO THE 28TH WAS...BY FAR...THE COLDEST EVER
RECORDED. THE AVERAGE TEMPERATURE DURING THIS PERIOD WAS JUST 11.6
DEGREES. THE PREVIOUS COLDEST AVERAGE TEMPERATURE FROM THE 12TH TO
28TH WAS 14.6 DEGREES IN 1904.

THE AVERAGE TEMPERATURE FOR THE ENTIRE MONTH OF FEBRUARY WAS 15.8
DEGREES...12.0 DEGREES BELOW NORMAL. THIS RANKED AS THE 5TH COLDEST
FEBRUARY ON RECORD. THE COLDEST WAS 1904 WITH AN AVERAGE TEMPERATURE
OF 14.4 DEGREES. IN COMPARISON...THE AVERAGE TEMPERATURE IN FEBRUARY
2014 WAS 18.4 DEGREES AND THAT RANKED AS THE 13TH COLDEST FEBRUARY.
THE WARMEST TEMPERATURE THIS MONTH WAS 43 DEGREES ON THE 7TH AND 8TH
AND THE COLDEST TEMPERATURE WAS 12 BELOW ZERO ON THE 20TH. THE 43
DEGREE HIGH WAS THE 9TH COLDEST HIGH TEMPERATURE FOR A FEBRUARY
WHILE THE 12 BELOW WAS THE 11TH COLDEST TEMPERATURE EVER RECORDED IN
FEBRUARY.

PRECIPITATION FOR THE MONTH WAS 1.98 INCHES...JUST 0.03 INCHES ABOVE
NORMAL AND TIED AS THE 41ST WETTEST FEBRUARY. DESPITE HAVING NEAR
NORMAL PRECIPITATION...THE VERY COLD AIR ALLOWED NEARLY ALL OF THIS
TO FALL AS SNOW WITH A HIGH RATIO OF SNOW TO LIQUID. TOTAL SNOWFALL
WAS A RECORD 36.4 INCHES...21.4 INCHES ABOVE NORMAL. THIS BROKE THE
PREVIOUS RECORD OF 35.5 INCHES SET IN 1908.

EVERY DAY THIS MONTH HAD A LOW TEMPERATURE BELOW FREEZING AND 24
DAYS HAD A HIGH TEMPERATURE OF 32 DEGREES OR COLDER. MEASURABLE
PRECIPITATION FELL ON 16 DAYS AND ONE DAY...THE FIRST...HAD OVER AN
INCH OF PRECIPITATION WHICH WAS ABOUT HALF OF THE MONTHLY TOTAL. THE
LOWEST SNOW DEPTH FOR THE MONTH WAS 3 INCHES AT 7AM ON THE FIRST.
THE LOWEST SNOW DEPTH AFTER THIS WAS 6 INCHES. THERE WERE 16 DAYS
WITH A SNOW DEPTH OF 10 INCHES OR GREATER. FEBRUARY 2015 TIES THE
YEARS OF 1967...1978 AND 1979 WITH 3 INCHES OR MORE OF SNOW DEPTH ON
EVERY DAY OF THE MONTH.

WINTER 2014-2015 SEASON SUMMARY

THE AVERAGE TEMPERATURE FOR THE SEASON WAS 23.8 DEGREES...3.2
DEGREES BELOW NORMAL. THIS RANKED AS THE 27TH COLDEST WINTER SEASON.
THE RATHER MILD DECEMBER OF 2014 WAS OFFSET BY THE VERY COLD
FEBRUARY TO NORMALIZE THE SEASONAL TEMPERATURE.

PRECIPITATION FOR THE PERIOD WAS 5.37 INCHES...1.48 INCHES BELOW
NORMAL. THIS RANKED AS THE 30TH DRIEST WINTER SEASON. SNOWFALL WAS
58.7 INCHES...5.8 INCHES ABOVE NORMAL. THIS RANKED AS THE 21ST
SNOWIEST WINTER SEASON.

MARCH

MARCH PROVED ONCE AGAIN IT CAN BE A MONTH OF EXTREMES AS WINTER
TRIED TO HOLD ON AND SPRING STRUGGLED TO BEGIN. MARCH BEGAN LIKE A
LION WITH COLD AND SNOWY CONDITIONS BUT WARMED CONSIDERABLY BY MID
MONTH WITH THE FIRST 70 DEGREE DAY OF THE YEAR. THIS WARMTH WOULD BE
BRIEF AS RECORD SNOW WAS RECORDED JUST A SHORT WEEK LATER. THE MONTH
DID END LIKE A LAMB WITH TEMPERATURES CLOSER TO NORMAL.

THE FIRST 8 DAYS OF MARCH WERE BELOW NORMAL...AND 4 OF THESE DAYS
WERE MORE THAN 10 DEGREES BELOW NORMAL AND 2 DAYS WERE AT LEAST 20
DEGREES BELOW NORMAL. THE NEXT 13 DAYS WERE NEAR OR ABOVE NORMAL
FOLLOWED BY ANOTHER STRETCH OF 8 DAYS NEAR OR BELOW NORMAL. THE
COLDEST DAY OF THE MONTH WAS MARCH 6TH WITH A HIGH OF JUST 26 AND A
LOW OF 1 BELOW ZERO FOR AN AVERAGE TEMPERATURE OF 13...21 DEGREES
BELOW NORMAL. THE WARMEST DAY WAS MARCH 16TH. THE HIGH WAS 72 AND
THE LOW WAS 44 FOR AN AVERAGE TEMPERATURE OF 58...21 DEGREES ABOVE
NORMAL.

IT WAS A RATHER DRY MONTH WITH MEASURABLE PRECIPITATION FALLING ON
JUST 8 DAYS. ONLY TWO DAYS...THE 23RD AND 25TH...SAW MORE THAN A
QUARTER OF AN INCH OF PRECIPITATION.

THE AVERAGE MONTHLY TEMPERATURE WAS 34.4 DEGREES...3.1 DEGREES BELOW
NORMAL. THIS RANKED AS THE 43RD COOLEST MARCH. PRECIPITATION WAS
ONLY 0.78 INCHES...WHICH WAS 1.64 INCHES BELOW NORMAL. THIS RANKED
AS THE 5TH DRIEST MARCH ON RECORD. MARCH SNOWFALL WAS 6.1
INCHES...ONE INCH BELOW NORMAL. THIS RANKED AS THE 58TH LEAST
SNOWIEST MARCH. MEASURABLE SNOW FELL ON JUST FOUR DAYS WITH THE
GREATEST FALLING ON MARCH 23RD WITH A SINGLE DAY RECORD SNOWFALL OF
4.7 INCHES. THIS BROKE THE PREVIOUS RECORD OF 3.4 INCHES SET ON THIS
DATE IN 1965.

APRIL

IT WAS A RATHER UNEVENTFUL APRIL AS TEMPERATURES AVERAGED JUST A
LITTLE WARMER THAN NORMAL AND PRECIPITATION WAS BELOW NORMAL. THERE
WAS A VARIETY OF WEATHER INCLUDING SNOW SHOWERS...THUNDERSTORMS...
FROST...AND TEMPERATURES RANGING FROM THE LOWER 20S TO 80 DEGREES.

THE AVERAGE MONTHLY TEMPERATURE WAS 50.3 DEGREES...JUST 1.3 DEGREES
ABOVE NORMAL. THIS RANKED AS THE 30TH WARMEST APRIL ON RECORD SINCE
1893. THE LOWEST TEMPERATURE WAS 23 ON THE 4TH AND THE WARMEST WAS
80 ON THE 18TH. PRECIPITATION FOR THE MONTH WAS 2.40 INCHES...0.83
INCHES BELOW NORMAL. THIS RANKED AS THE 36TH DRIEST APRIL ON RECORD.
MEASURABLE PRECIPITATION FELL ON 11 DAYS AND TWO DAYS...THE 9TH AND
19TH...RECEIVED OVER A HALF INCH OF RAINFALL. THERE WAS A TRACE OF
SNOWFALL ON THE 22ND AND TOTAL FOR THE MONTH WAS JUST A TRACE. THIS
WAS 1.4 INCHES BELOW NORMAL. THIS TIED FOR THE 6TH LEAST SNOWIEST
APRIL ON RECORD.

MAY

NEARLY TWO AND A HALF INCHES OF RAIN ON THE LAST TWO DAYS OF MAY
HELPED PUSH MONTHLY PRECIPITATION TOTALS OVER 6 INCHES AT SOUTH
BEND. THIS ALSO MOVED THE MONTHLY PRECIPITATION TOTALS FROM THE NEAR
NORMAL CATEGORY TO THE WELL ABOVE NORMAL. IT WAS ALSO A RELATIVELY
WARM MONTH WITH TEMPERATURES AVERAGING NEARLY 4 DEGREES WARMER THAN
NORMAL. THE LAST DAY OF THE MONTH HOWEVER WAS VERY COOL WITH DAYTIME
TEMPERATURES STAYING IN THE 50S.

THE AVERAGE MONTHLY TEMPERATURE WAS 63.2 DEGREES...3.9 DEGREES ABOVE
NORMAL. THIS RANKED TIED FOR THE 19TH WARMEST MAY ON RECORD. THERE
WERE JUST 9 DAYS WITH AN AVERAGE TEMPERATURE BELOW NORMAL. THE
HIGHEST TEMPERATURE WAS 86 ON THE 7TH AND THE COOLEST WAS 37 ON THE
19TH AND 20TH. THERE WERE 12 DAYS WITH A HIGH TEMPERATURE OF 80
DEGREES OR WARMER BUT ALSO 4 DAYS WITH A HIGH TEMPERATURE BELOW 60.

MAY WAS CLOSE TO NORMAL FOR PRECIPITATION HEADING INTO THE 30TH BUT
2.00 INCHES OF RAIN FELL AT THE AIRPORT ON THIS DAY AND ANOTHER 0.46
INCHES FELL DURING THE MORNING OF THE 31ST. THIS PUSHED THE MONTHLY
TOTAL PRECIPITATION TO 6.01 INCHES...2.18 INCHES ABOVE NORMAL. THIS
RANKED AS THE 14TH WETTEST MAY ON RECORD. WITHOUT THIS LATE MONTH
HEAVY RAIN...MAY WOULD HAVE RANKED AROUND 56TH WETTEST. THE 2.00
INCHES OF RAINFALL ON THE 30TH WAS ALSO A RECORD FOR THAT
DATE...BREAKING THE PREVIOUS RECORD OF 1.53 INCHES SET IN 2004.
THERE WAS NO SNOWFALL RECORDED DURING THE MONTH.

SPRING SEASON 2015 SUMMARY

THE AVERAGE TEMPERATURE FOR THE SPRING SEASON WAS 49.3 DEGREES...0.7
DEGREES ABOVE NORMAL. THIS RANKED AS THE 32ND WARMEST SPRING SEASON
DATING BACK TO 1893. PRECIPITATION WAS 9.19 INCHES...0.29 INCHES
BELOW NORMAL. THIS RANKED AS THE 53RD WETTEST SPRING SEASON.
SNOWFALL FOR SPRING WAS 6.1 INCHES...2.4 INCHES BELOW NORMAL. THIS
RANKED AS THE 44TH LEAST SNOWIEST SPRING ON RECORD.

JUNE

DESPITE HEAVY RAINFALL ACROSS MUCH OF THE MICHIANA
REGION...TEMPERATURES AND PRECIPITATION AT SOUTH BEND INTERNATIONAL
AIRPORT WERE CLOSE TO NORMAL FOR THE MONTH OF JUNE. MEASURABLE
PRECIPITATION FELL ON 18 DAYS AND 3 OF THOSE DAYS HAD A HALF INCH OR
MORE OF RAIN. AREAS TO THE SOUTH OF SOUTH BEND RECEIVED
SIGNIFICANTLY MORE RAINFALL WITH SIGNIFICANT FLOODING OCCURRING OVER
NORTHWEST AND NORTH CENTRAL INDIANA.

THE AVERAGE MONTHLY TEMPERATURE WAS 69.4 DEGREES...0.3 DEGREES ABOVE
NORMAL. THIS WAS THE 51ST WARMEST JUNE ON RECORD. THE HIGHEST
TEMPERATURE WAS 90 ON THE 10TH AND THE COOLEST TEMPERATURE WAS 44 ON
THE 2ND. JUNE PRECIPITATION AT SOUTH BEND TOTALED 4.07 INCHES...0.28
INCHES ABOVE NORMAL. THIS RANKED AS THE 53RD WETTEST JUNE ON RECORD.
THE GREATEST 24 HOUR PRECIPITATION WAS 1.13 INCHES ON THE 26TH AND
27TH.

JULY

JULY WAS COOLER AND WETTER THAN NORMAL. AFTER AN ACTIVE RAINFALL
PATTERN IN JUNE...JULY BEGAN DRY AT SOUTH BEND...WITH NO RAINFALL
OBSERVED DURING THE FIRST 6 DAYS OF THE MONTH. HOWEVER...AN ACTIVE
WEATHER PATTERN RETURNED DURING THE SECOND AND THIRD WEEKS WITH
SEVERAL DAYS OF RAINFALL. DRY CONDITIONS RETURNED TO END JULY WITH
NO RAINFALL OBSERVED FROM THE 19TH THROUGH THE 31ST. TEMPERATURES
WERE AT OR BELOW NORMAL FOR THE FIRST HALF OF JULY...WITH ONLY 5
DAYS THAT REACHED 80 DEGREES FROM THE 1ST THROUGH THE 16TH...AND A
HIGH TEMPERATURE OF ONLY 67 DEGREES ON THE 8TH AND 69 DEGREES ON THE
FIRST. TEMPERATURES DID REBOUND TO AT OR ABOVE NORMAL DURING THE
LAST HALF OF THE MONTH...WITH A HIGH TEMPERATURE OF AT LEAST 80
DEGREES EVERY DAY BUT ONE FROM THE 17TH THROUGH THE 31ST.

THE AVERAGE MONTHLY TEMPERATURE WAS 71.2 DEGREES...1.8 DEGREES BELOW
NORMAL. THIS WAS THE T-22ND COOLEST JULY ON RECORD. THE HIGHEST
TEMPERATURE WAS 90 ON THE 17TH...18TH AND 28TH AND THE COOLEST
TEMPERATURE WAS 53 ON THE 2ND...8TH AND 10TH. JULY PRECIPITATION AT
SOUTH BEND TOTALED 4.79 INCHES...0.79 INCHES ABOVE NORMAL. THIS
RANKED AS THE 33RD WETTEST JULY ON RECORD. THE GREATEST 24 HOUR
PRECIPITATION WAS 1.98 INCHES ON THE 16TH AND 17TH. THERE WERE ONLY
8 DAYS WITH MEASURABLE RAINFALL IN JULY...ALL BETWEEN THE 7TH AND
18TH OF THE MONTH. WHILE RAINFALL WAS ONLY SLIGHTLY ABOVE NORMAL AT
SOUTH BEND...SOME AREAS SOUTH AND EAST OF SOUTH BEND RECEIVED
RAINFALL NEARLY 200-300% ABOVE NORMAL.

AUGUST

AUGUST STARTED OUT WITH NEAR NORMAL TEMPERATURES AND RELATIVELY DRY
CONDITIONS AT SOUTH BEND. DURING THE FIRST 12 DAYS OF THE
MONTH...HIGH TEMPERATURES GENERALLY RANGED FROM THE UPPER 70S TO MID
80S...ASIDE FROM A HIGH TEMPERATURE OF 94 DEGREES ON THE 2ND...WHICH
WAS THE WARMEST DAY OF 2015 AT SOUTH BEND TO DATE. THERE WERE ONLY
THREE DAYS WITH MEASURABLE RAINFALL IN THE FIRST 16 DAYS OF THE
MONTH...ONLY TOTALING 0.90 INCHES OF PRECIPITATION.

A MORE TUMULTUOUS PATTERN DEVELOPED DURING THE LAST HALF OF THE
MONTH. AFTER A STRETCH OF ABOVE NORMAL TEMPERATURES FROM THE 13TH
THROUGH THE 19TH...TEMPERATURES WERE WELL BELOW NORMAL FROM THE 20TH
THROUGH THE 28TH...RECOVERING TO NEAR NORMAL BY THE END OF THE
MONTH. SOUTH BEND ALSO HAD 6 DAYS OF MEASURABLE RAINFALL FROM THE
15TH THROUGH THE END OF THE MONTH.

THE AVERAGE MONTHLY TEMPERATURE WAS 70.5 DEGREES...ONLY 0.8 DEGREES
BELOW NORMAL. THIS WAS THE T-44TH COOLEST AUGUST ON RECORD. THE
HIGHEST TEMPERATURE WAS 94 ON THE 2ND...AND THE COOLEST TEMPERATURE
WAS 47 ON THE 27TH. AUGUST PRECIPITATION AT SOUTH BEND TOTALED 2.32
INCHES...1.44 INCHES BELOW NORMAL. THIS RANKED AS THE 36TH DRIEST
AUGUST ON RECORD. THE GREATEST 24 HOUR PRECIPITATION WAS 0.55 INCHES
ON THE 23RD. THERE WERE ONLY 9 DAYS WITH MEASURABLE RAINFALL IN
AUGUST.

SUMMER 2015 SEASON SUMMARY

THE AVERAGE TEMPERATURE FOR THE SUMMER AT SOUTH BEND WAS 70.4...JUST
0.7 DEGREES BELOW NORMAL. THIS TIED FOR THE 39TH COOLEST SUMMER ON
RECORD. THERE WERE 5 DAYS WITH HIGH TEMPERATURES AT OR ABOVE 90
DEGREES THIS SUMMER. THE NORMAL NUMBER OF 90 DEGREE DAYS AT SOUTH
BEND FOR A YEAR IS 14. PRECIPITATION FOR THE SEASON WAS 11.18
INCHES... 0.37 INCHES BELOW NORMAL. THIS WAS THE 53RD WETTEST SUMMER
ON RECORD. JUNE AND JULY PRECIPITATION WERE BOTH SLIGHTLY ABOVE
NORMAL BUT A DRY AUGUST OFFSET THIS WITH PRECIPITATION THAT WAS
BELOW NORMAL BY OVER AN INCH.

SEPTEMBER

THE FIRST MONTH OF METEOROLOGICAL FALL WAS RATHER UNEVENTFUL...VERY
WARM AND SURPRISINGLY WETTER THAN NORMAL. MEASURABLE PRECIPITATION
OCCURRED ON JUST 5 DAYS DURING THE MONTH...BUT OVER AN INCH OF RAIN
FELL ON 3 OF THESE DAYS. AN INCREDIBLE 21 DAYS OF THE MONTH WERE
CONSIDERED MOSTLY CLEAR AND ONLY THREE DAYS WERE CONSIDERED CLOUDY.

THE AVERAGE MONTHLY TEMPERATURE WAS 67.1...3.2 DEGREES ABOVE NORMAL.
THIS TIED WITH THE YEAR 1936 AS THE 24TH WARMEST SEPTEMBER ON
RECORD. THE AVERAGE HIGH TEMPERATURE WAS 78.0 AND THE AVERAGE LOW
WAS 56.3 DEGREES. THE HIGHEST TEMPERATURE WAS 90...WHICH OCCURRED ON
3 DAYS. THE LOWEST TEMPERATURE WAS 42...WHICH OCCURRED ON THE 13TH.
TOTAL PRECIPITATION WAS 4.05 INCHES...0.52 INCHES ABOVE NORMAL. THIS
TIED WITH THE YEAR 1899 AS THE 37TH WETTEST SEPTEMBER.

OCTOBER

TEMPERATURES FOR OCTOBER AVERAGED JUST SLIGHTLY ABOVE NORMAL WHILE
PRECIPITATION WAS WELL BELOW NORMAL. IT WAS GENERALLY AN UNEVENTFUL
MONTH WITH ABOUT 80 PERCENT OF THE MONTHLY RAINFALL OCCURRING ON 3
OF THE LAST 5 DAYS OF THE MONTH. NEARLY HALF OF THE MONTHLY
PRECIPITATION FELL ON THE 27TH AND 28TH. THIS RAINFALL WAS
COMPLIMENTS OF THE REMNANTS OF HURRICANE PATRICIA...WHICH HAD
EARLIER FORMED IN THE EASTERN PACIFIC OCEAN AND WAS DESIGNATED AS
THE STRONGEST HURRICANE ON RECORD IN THE EASTERN NORTH PACIFIC AND
ATLANTIC OCEAN REGION.

THE FIRST 26 DAYS OF OCTOBER WERE SO DRY THAT PARTS OF THE REGION
EXPERIENCED A FLASH DROUGHT AND WERE INCLUDED IN THE NATIONAL
DROUGHT MONITOR. MUCH OF NORTHERN INDIANA WAS INCLUDED IN THE
CATEGORY D0 WHICH REPRESENTS ABNORMALLY DRY CONDITIONS. A SMALL PART
OF EXTREME NORTHERN INDIANA AND MUCH OF SOUTHWEST LOWER MICHIGAN
WERE INCLUDED IN THE CATEGORY D1 WHICH REPRESENTS A MODERATE
DROUGHT. THE RAIN AT THE END OF THE MONTH HELPED PROVIDE MUCH NEEDED
SOIL MOISTURE GOING INTO THE WINTER SEASON.

WEATHER CONDITIONS ON OCTOBER 19TH WERE SO DRY THAT A RARE RED FLAG
WARNING WAS ISSUED FOR NORTHERN INDIANA. THIS WARNING IS ISSUED WHEN
THE COMBINATION OF ATMOSPHERIC CONDITIONS AND DRY VEGETATION COULD
LEAD TO RAPIDLY SPREADING WILD FIRES. AFTERNOON RELATIVE HUMIDITY
VALUES DROPPED BELOW 30 PERCENT WHILE GUSTY SURFACE WINDS INCREASED
TO AROUND 30 MPH.

THE AVERAGE MONTHLY TEMPERATURE FOR OCTOBER AT SOUTH BEND
INTERNATIONAL AIRPORT WAS 52.8...0.7 DEGREES ABOVE NORMAL. THIS TIED
WITH 1954 AND 1989 AS THE 64TH WARMEST OCTOBER. THE HIGHEST
TEMPERATURE WAS 78 ON THE 21ST AND THE LOWEST TEMPERATURE WAS 28 ON
THE 18TH. IT WAS A DRY MONTH WITH JUST 1.48 INCHES OF
PRECIPITATION... 1.84 INCHES BELOW NORMAL. THIS RANKED AS THE 27TH
DRIEST OCTOBER.
MEASURABLE PRECIPITATION FELL ON JUST 7 DAYS WITH ONE OF THOSE
DAYS...OCTOBER 28TH...HAVING MORE THAN A HALF INCH OF PRECIPITATION.
THERE WAS NO SNOWFALL DURING THE MONTH. NORMAL OCTOBER SNOWFALL IS
0.4 INCHES.

NOVEMBER

THE FIRST WEEK OF NOVEMBER WAS QUITE WARM AT SOUTH BEND...WITH 4
DAYS OF HIGH TEMPERATURES IN THE 70S FROM THE 2ND THROUGH THE 5TH.
ANOTHER WARM STRETCH OF TEMPERATURES WERE OBSERVED FROM THE 15TH
THROUGH THE 18TH WITH HIGHS OF AT LEAST 58 DEGREES EACH DAY.
HOWEVER...A WINTER STORM BROUGHT COLDER TEMPERATURES AND THE FIRST
MEASURABLE SNOWFALL OF THE SEASON ON THE 21ST. 9.1 INCHES OF SNOW
FELL AT SOUTH BEND ON THE 21ST AND 22ND...WITH THE HIGH TEMPERATURE
ONLY REACHING 30 DEGREES ON THE 22ND. THE SNOW MELTED QUICKLY AS
TEMPERATURES WARMED TO NEAR 60 DEGREES BY THANKSGIVING DAY ON THE
26TH. THE SNOW DEPTH WENT FROM 8 INCHES ON THE MORNING OF THE 22ND
TO NOTHING BY THE MORNING OF THE 26TH. THE MONTH ENDED WITH A COOLER
AND WETTER WEATHER PATTERN.

THE AVERAGE MONTHLY TEMPERATURE AT SOUTH BEND FOR NOVEMBER WAS 44.5
DEGREES...3.8 DEGREES ABOVE NORMAL. THIS RANKED AS THE 12TH WARMEST
NOVEMBER ON RECORD. THE HIGHEST TEMPERATURE WAS 75 ON THE 4TH AND
THE LOWEST WAS 11 ON THE 22ND. THERE WERE 4 DAYS WITH A HIGH OF 70
DEGREES OR MORE...WHICH TIED FOR THE 2ND MOST 70 DEGREE DAYS IN
NOVEMBER AT SOUTH BEND ON RECORD.

NOVEMBER PRECIPITATION AT SOUTH BEND TOTALED 2.38 INCHES...WHICH WAS
0.89 INCHES BELOW NORMAL. THIS RANKED AS THE 54TH DRIEST NOVEMBER ON
RECORD.  MEASURABLE RAINFALL WAS RECORDED ON 11 DAYS DURING THE
MONTH. THE GREATEST 24 HOUR PRECIPITATION TOTAL DURING THE MONTH WAS
0.77 INCHES ON THE 27TH. THE 9.1 INCHES OF SNOWFALL WAS 4.3 INCHES
ABOVE NORMAL. THIS RANKED AS THE 33RD SNOWIEST NOVEMBER ON
RECORD...AND WAS 10.0 INCHES LESS THAN THE NOVEMBER SNOWFALL TOTAL
FROM 2014.

FALL 2015 SEASON SUMMARY

ALL THREE MONTHS EXPERIENCED MONTHLY AVERAGE TEMPERATURES ABOVE
NORMAL...WITH SEPTEMBER AND NOVEMBER BOTH OVER 3 DEGREES ABOVE
NORMAL. THE SEASONAL AVERAGE TEMPERATURE WAS 54.8 DEGREES...2.5
DEGREES ABOVE NORMAL. THIS RANKED AS THE 13TH WARMEST FALL SEASON ON
RECORD AT SOUTH BEND.

PRECIPITATION WAS 7.91 INCHES...2.21 INCHES BELOW NORMAL. THIS
RANKED AS THE 41ST DRIEST FALL SEASON ON RECORD. SEPTEMBER WAS ABOUT
A HALF INCH ABOVE NORMAL WHILE OCTOBER WAS NEARLY 2 INCHES BELOW
NORMAL AND NOVEMBER WAS NEARLY AN INCH BELOW NORMAL.

THE SEASONAL SNOWFALL TOTAL WAS 9.1 INCHES...3.9 INCHES ABOVE
NORMAL. THIS RANKED AS THE 30TH SNOWIEST FALL SEASON ON RECORD. ALL
OF THIS SNOW FELL DURING ONE EVENT ON THE 21ST AND 22ND OF NOVEMBER.

DECEMBER

IT WAS A VERY WARM AND WET DECEMBER WITH RECORD WARMTH AND ABOVE
NORMAL PRECIPITATION. THOSE WISHING FOR SNOW AND A WHITE CHRISTMAS
WERE DISAPPOINTED AS NEARLY ALL OF THE PRECIPITATION FELL AS RAIN OR
SLEET WHILE CHRISTMAS DAY WAS SUNNY...MILD AND GREEN FOR LATE
DECEMBER.

THIS PAST FALL AND FIRST MONTH OF WINTER HAVE SEEN THE DEVELOPMENT
OF THE SECOND STRONGEST EL NINO SINCE MODERN RECORDS BEGAN IN 1950.
EL NINO OCCURS WHEN THE WATER TEMPERATURES OF THE PACIFIC OCEAN
ALONG THE EQUATOR WARM ABOVE NORMAL FOR SEVERAL MONTHS IN A ROW.
THIS IN TURN CAN EFFECT ATMOSPHERIC WEATHER PATTERNS INCLUDING THE
LOCATION OF WHAT IS KNOWN AS THE SUBTROPICAL AND POLAR JET STREAMS
AS THEY MOVE ACROSS NORTH AMERICA. THE STRONG EL NINO COUPLED WITH
OTHER ATMOSPHERIC PARAMETERS IN THE NORTHERN POLE REGIONS LIKELY
CONTRIBUTED TO OUR RECORD WARM DECEMBER IN THE SOUTH BEND AREA.

DECEMBER WAS SO WARM THAT THERE WERE ONLY 3 DAYS WITH AVERAGE
TEMPERATURES BELOW NORMAL...AND THEY WERE JUST BARELY BELOW NORMAL.
THOSE DAYS WERE THE 2ND...18TH AND 19TH...WITH THE 2ND AND 18TH JUST
1 DEGREE BELOW NORMAL AND THE 19TH JUST 2 DEGREES BELOW NORMAL. IN
CONTRAST...THERE WERE 16 DAYS WITH AN AVERAGE TEMPERATURE OF 10
DEGREES OR MORE ABOVE NORMAL AND 5 OF THESE DAYS WERE MORE THAN 20
DEGREES ABOVE NORMAL WHILE 1 DAY...THE 13TH...WAS MORE THAN 30
DEGREES ABOVE NORMAL. CHRISTMAS DAY WAS EVEN MILD WITH MOSTLY SUNNY
AND DRY CONDITIONS. THE HOLIDAY WAS A FESTIVE GREEN RATHER THAN
SNOWY WHITE THANKS TO THE WARM TEMPERATURES AND LACK OF SNOWFALL IN
DECEMBER. THE CHRISTMAS DAY HIGH TEMPERATURE WAS 47...THE LOW WAS 31
AND THE AVERAGE TEMPERATURE WAS 39...13 DEGREES ABOVE NORMAL.

THIS DECEMBER BROKE A RECORD FOR THE GREATEST NUMBER OF DAYS WITH
HIGH TEMPERATURES OF 50 DEGREES OR WARMER WITH 11. THE PREVIOUS
RECORD WAS 10 SET IN ANOTHER EL NINO DECEMBER...1982. THERE WERE 4
DAYS WITH HIGH TEMPERATURES OF AT LEAST 60 DEGREES AND THIS RANKED
3RD. DECEMBER 1982 HOLDS THE RECORD WITH 7.

THE AVERAGE HIGH TEMPERATURE FOR DECEMBER WAS 45.5....10.3 DEGREES
ABOVE NORMAL. THIS RANKED AS THE WARMEST AVERAGE DECEMBER HIGH
TEMPERATURE ON RECORD...BREAKING THE OLD RECORD OF 45.4 SET IN
DECEMBER 1923. THE AVERAGE LOW TEMPERATURE WAS 33.5 DEGREES...11.1
DEGREES ABOVE THE NORMAL OF 22.4. THIS ALSO RANKED AS THE WARMEST
AVERAGE DECEMBER LOW TEMPERATURE ON RECORD...BREAKING THE OLD RECORD
OF 33.0 SET IN DECEMBER 1982.  THIS AVERAGE LOW WAS ALMOST AS WARM
AS THE NORMAL AVERAGE HIGH TEMPERATURE FOR THE MONTH WHICH IS 35.2
DEGREES.

THE AVERAGE MONTHLY TEMPERATURE FOR DECEMBER WAS AN INCREDIBLE 39.5
DEGREES...10.7 DEGREES ABOVE NORMAL. THIS RANKED AS THE WARMEST
DECEMBER ON RECORD...SURPASSING 39.0 DEGREES SET IN 1982 WHICH ALSO
HAPPENED TO BE ONE OF THE STRONGEST RECORDED EL NINO EVENTS SINCE
1950. THE HIGHEST TEMPERATURE THIS MONTH WAS 63 ON THE 13TH. THIS
TIED WITH 1941 AND 1951 AS THE 11TH WARMEST HIGH TEMPERATURE
RECORDED IN DECEMBER. THE LOWEST TEMPERATURE WAS 22 ON THE 19TH AND
20TH. THIS WAS A RECORD FOR THE WARMEST DECEMBER LOW TEMPERATURE
RECORDED...BREAKING THE OLD RECORD OF 20 SET IN 1923.

WHILE MONTHLY PRECIPITATION WAS NOT RECORD BREAKING...IT WAS STILL
WELL ABOVE NORMAL FOR DECEMBER WITH ONE DAILY PRECIPITATION RECORD
BEING SET. TOTAL PRECIPITATION WAS 4.12 INCHES...1.51 INCHES ABOVE
NORMAL. THIS RANKED AS TIED WITH 1987 AS THE 15TH WETTEST DECEMBER
ON RECORD. THERE WERE 13 DAYS WITH MEASURABLE PRECIPITATION...3 DAYS
WITH A HALF INCH OR MORE...AND 1 DAY WITH AN INCH OR MORE. A DAILY
PRECIPITATION RECORD WAS SET ON DECEMBER 28TH WHEN 1.45 INCHES OF
PRECIPITATION WAS MEASURED...BREAKING THE OLD DAILY RECORD OF 0.74
INCHES SET IN 1948.

AN INTERESTING SCENARIO TOOK PLACE THIS MONTH WITH SNOWFALL. GOING
INTO DECEMBER 28TH...JUST FOUR TENTHS OF AN INCH OF SNOW HAD BEEN
RECORDED FOR DECEMBER WHICH WAS THE SECOND LEAST AMOUNT ON RECORD.
HOWEVER...ON DECEMBER 28TH...A STRONG STORM SYSTEM BROUGHT
RAIN...FREEZING RAIN AND SLEET TO THE SOUTH BEND AREA. SLEET
ACCUMULATION OF 1 INCH WAS RECORDED BY THE OFFICIAL SOUTH BEND
WEATHER OBSERVER. WHILE SLEET IS NOT SNOW...IT IS OFFICIALLY
RECORDED WITH SNOWFALL IN THE CLIMATE RECORD BOOKS AS FROZEN
PRECIPITATION. THEREFORE THE SLEET ACCUMULATION ON THE 28TH BROUGHT
THE MONTHLY SNOWFALL TOTAL IN SOUTH BEND TO 1.4 INCHES. THIS IS
STILL 15.9 INCHES BELOW THE NORMAL DECEMBER SNOWFALL OF 17.3
INCHES...BUT IT DID DROP DECEMBER TO THE 5TH LEAST SNOWIEST DECEMBER
ON RECORD.

$$



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