Climatological Report (Annual)
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000
CXUS53 KIWX 020113
CLASBN

CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
808 PM EST MON JAN 1 2018

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

...THE SOUTH BEND CLIMATE SUMMARY FOR THE YEAR OF 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2017

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            92   06/12        MM      MM       93
LOWEST             -6   12/28        MM      MM      -14
AVG. MAXIMUM     60.1              58.8     1.3     60.5
AVG. MINIMUM     41.4              40.8     0.6     41.8
MEAN             50.7              49.8     0.9
DAYS MAX >= 90      7               9.7    -2.7       13
DAYS MAX <= 32     36              44.6    -8.6       44
DAYS MIN <= 32    118             122.7    -4.7      119
DAYS MIN <= 0       7               5.3     1.7        6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        55.61   1990
 MINIMUM        25.15   1963
TOTALS          43.52             38.00    5.52    46.60
DAILY AVG.       0.12              0.10    0.02     0.13
DAYS >= .01       148             145.4     2.6      152
DAYS >= .10        88              78.3     9.7       80
DAYS >= .50        28              23.4     4.6       28
DAYS >= 1.00        8               7.2     0.8       10

SNOWFALL (INCHES)
RECORDS
 TOTAL          141.7   1978
TOTALS           50.4              66.6   -16.2     83.9
SINCE 7/1        32.4              22.5     9.9     24.2
SNOWDEPTH AVG.      0                MM      MM        1
DAYS >= TRACE      55              44.9    10.1       68
DAYS >= 1.0        15              20.4    -5.4       26
GREATEST
 SNOW DEPTH         7   12/31                          8
                        12/29
                        12/30

DEGREE_DAYS
HEATING TOTAL    5809              6298    -489     5909
 SINCE 7/1         MM              2391      MM       MM
COOLING TOTAL     692               773     -81      950
 SINCE 1/1        692               773     -81      950
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
HIGHEST WIND SPEED/DIRECTION    41/250    DATE  03/08
HIGHEST GUST SPEED/DIRECTION    52/280    DATE  03/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR          159
NUMBER OF DAYS PC            110
NUMBER OF DAYS CLOUDY         96

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN               50     RAIN                      62
LIGHT RAIN              143     FREEZING RAIN              2
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                4     SNOW                      12
LIGHT SNOW               47     SLEET                      1
FOG                     176     FOG W/VIS <= 1/4 MILE     23
HAZE                     37

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

&&

SOUTH BEND 2017 CLIMATE YEAR IN REVIEW

THE AVERAGE ANNUAL TEMPERATURE AT SOUTH BEND WAS 50.7 DEGREES...0.9
DEGREES ABOVE NORMAL. THIS WAS THE 30TH WARMEST YEAR ON RECORD. THE
WARMEST YEAR EVER RECORDED WAS 53.3 DEGREES SET IN 2012. THE HIGHEST
TEMPERATURE FOR THE YEAR WAS 92 DEGREES ON JUNE 12TH AND THE LOWEST
TEMPERATURE FOR THE YEAR WAS 6 BELOW ZERO ON DECEMBER 28TH.

THERE WERE 7 DAYS WITH A HIGH TEMPERATURE OF AT LEAST 90 DEGREES OR
WARMER.  THIS WAS ABOUT 3 DAYS BELOW NORMAL. THERE WERE 118 DAYS
WITH A LOW TEMPERATURE AT OR BELOW FREEZING. THIS WAS ABOUT 5 DAYS
LESS THAN NORMAL.

PRECIPITATION FOR THE YEAR WAS 43.52 INCHES WHICH WAS 5.52 INCHES
ABOVE NORMAL. THIS RANKED AS THE 18TH WETTEST YEAR ON RECORD. THERE
WERE 8 DAYS THIS YEAR WITH 1 OR MORE INCHES OF PRECIPITATION.

SNOWFALL FOR THE CALENDAR YEAR WAS 50.4 INCHES...16.2 INCHES BELOW
NORMAL. THIS RANKED AS THE 14TH LEAST SNOWIEST CALENDAR YEAR ON
RECORD. IT IS INTERESTING TO NOTE THAT MORE THAN HALF OF THIS
SNOWFALL, 32.4 INCHES, FELL IN DECEMBER TO END THE YEAR. GOING INTO
DECEMBER, 2017 WAS THE 3RD LEAST SNOWIEST YEAR ON RECORD WITH JUST
18 INCHES.

BELOW IS A MONTH BY MONTH REVIEW OF THE WEATHER IN 2017

JANUARY

...MILD AND WET JANUARY BUT WELL BELOW NORMAL SNOWFALL...

DESPITE ABOVE NORMAL PRECIPITATION THIS MONTH...SNOWFALL AT SOUTH
BEND INTERNATIONAL AIRPORT WAS WELL BELOW NORMAL. THIS WAS DUE TO
THE VERY MILD TEMPERATURES THAT OCCURRED FOR MUCH OF THE MONTH.

JANUARY BEGAN MILD AND WET WITH OVER A HALF INCH OF RAIN FALLING ON
THE 2ND. AN ARCTIC COLD FRONT PUT A QUICK END TO THESE ABOVE NORMAL
TEMPERATURES AND THE 5TH THROUGH THE 8TH EXPERIENCED AVERAGE
TEMPERATURES MORE THAN 10 DEGREES BELOW NORMAL. THE COLDEST DAY OF
THE MONTH OCCURRED DURING THIS STRETCH ON THE 6TH WITH A HIGH
TEMPERATURE OF JUST 9 AND A LOW OF NEGATIVE 2 FOR AN AVERAGE DAILY
TEMPERATURE OF 4 DEGREES...21 DEGREES BELOW NORMAL. TEMPERATURES
QUICKLY MODERATED AND A HIGH TEMPERATURE OF 50 DEGREES WAS REACHED
ON THE 10TH. THE REMAINDER OF JANUARY WAS VERY MILD WITH ONLY TWO
DAYS BETWEEN THE 10TH AND 31ST EXPERIENCING BELOW NORMAL
TEMPERATURES.

A RECORD OF 9 CONSECUTIVE DAYS ABOVE FREEZING WAS SET DURING THE
MIDDLE OF THE MONTH FROM JANUARY 17TH THROUGH THE 25TH. THE WARMEST
TEMPERATURE DURING THIS STRETCH WAS 61 ON THE 21ST AND THE COLDEST
TEMPERATURE WAS 33. THIS BROKE THE OLD RECORD OF 8 DAYS FROM JANUARY
2ND THROUGH THE 9TH IN 1992.

THE AVERAGE MONTHLY TEMPERATURE WAS 29.7...5.3 DEGREES ABOVE NORMAL.
THIS RANKED AS THE 18TH WARMEST JANUARY ON RECORD. THE HIGHEST
TEMPERATURE FOR THE MONTH WAS 61 ON THE 21ST AND THE COLDEST WAS
NEGATIVE 4 DEGREES ON THE 7TH. THERE WERE ONLY 11 DAYS WHERE THE
HIGH TEMPERATURE DID NOT GET ABOVE FREEZING.

JANUARY PRECIPITATION WAS 3.34 INCHES...1.05 INCHES ABOVE NORMAL.
THIS RANKED AS THE 26TH WETTEST JANUARY ON RECORD. MEASURABLE
PRECIPITATION FELL ON 19 DAYS AND TWO DAYS HAD A HALF INCH OR MORE
OF PRECIPITATION.

SNOWFALL FOR THE MONTH WAS 9.1 INCHES...11.5 INCHES BELOW NORMAL.
THIS RANKED AS 35TH LEAST SNOWIEST JANUARY. MEASURABLE SNOW FELL ON
11 DAYS BUT THE GREATEST SINGLE DAY SNOWFALL WAS JUST 2.2 INCHES ON
THE 29TH.

FEBRUARY

...RECORD WARM FEBRUARY WITH WELL BELOW NORMAL SNOWFALL...

IT WAS AN INCREDIBLY WARM AND WET FEBRUARY IN THE SOUTH BEND AREA
WITH ABOVE NORMAL PRECIPITATION AND SNOWFALL THAT WAS WELL BELOW
NORMAL. THE DAILY TEMPERATURES DURING FEBRUARY AVERAGED BELOW NORMAL
ON JUST FIVE DAYS WHILE 14 DAYS AVERAGED MORE THAN 10 DEGREES ABOVE
NORMAL. THERE WERE SIX DAYS THAT AVERAGED 20 DEGREES OR MORE ABOVE
NORMAL. PRECIPITATION WAS WELL ABOVE NORMAL BUT DUE TO THE WARM
TEMPERATURES JUST ABOUT ALL OF IT FELL AS LIQUID WITH JUST 0.4
INCHES OF SNOW FALLING DURING THE ENTIRE MONTH.

THE AVERAGE MONTHLY TEMPERATURE WAS 37.3 DEGREES...9.5 DEGREES ABOVE
NORMAL. THIS RANKED AS THE WARMEST FEBRUARY ON RECORD. THE PREVIOUS
RECORD WAS 37.0 DEGREES SET IN 1998. THE WARMEST TEMPERATURE WAS 66
ON THE 18TH AND THE COLDEST WAS 11 ON THE 4TH. THE 66 WAS THE 5TH
WARMEST FEBRUARY TEMPERATURE EVER RECORDED IN SOUTH BEND. THE
AVERAGE HIGH TEMPERATURE FOR THE MONTH WAS 47.4 DEGREES. THIS WAS A
RECORD...SURPASSING THE PREVIOUS RECORD OF 45.1 SET IN 1976. THE
AVERAGE LOW TEMPERATURE WAS 27.3. THIS RANKED AS THE 5TH WARMEST
MEAN LOW TEMPERATURE FOR FEBRUARY. THERE WERE ONLY 4 DAYS WITH A
HIGH TEMPERATURE THAT DID NOT REACH 32 DEGREES.

THERE WERE 7 DAYS IN FEBRUARY WITH A HIGH TEMPERATURE OF 60 DEGREES
OR WARMER. THIS TIED WITH 1930 AS THE MOST NUMBER OF 60 DEGREE DAYS
IN FEBRUARY. HALF OF THE DAYS...14...HAD A HIGH TEMPERATURE OF 50
DEGREES OR WARMER. THIS WAS A RECORD...SURPASSING 1976 WHICH HAD 13
DAYS ABOVE 50 DEGREES.

FEBRUARY WAS A WET MONTH WITH 3.65 INCHES OF PRECIPITATION BEING
RECORDED. THIS WAS 1.70 INCHES ABOVE NORMAL AND RANKED AS THE 11TH
WETTEST FEBRUARY. NEARLY HALF OF THIS PRECIPITATION FELL ON THE LAST
DAY OF THE MONTH AND NEARLY 90 PERCENT OF THE MONTHLY PRECIPITATION
FELL ON JUST TWO DAYS...THE 7TH AND 28TH. THE RAIN THAT FELL ON EACH
OF THESE TWO DAYS ALSO BROKE SINGLE DAY RAINFALL RECORDS.

MEASURABLE SNOW FELL ON JUST 3 DAYS FOR A TOTAL OF ONLY 0.4 INCHES.
THIS WAS 14.6 INCHES BELOW NORMAL AND RANKED AS THE 2ND LEAST
SNOWIEST FEBRUARY ON RECORD. THE RECORD IS A TRACE SET IN 1998.

MARCH

...SEASONABLE TEMPERATURES WITH ABOVE NORMAL RAINFALL IN MARCH...

THE AVERAGE TEMPERATURE FOR MARCH WAS CLOSE TO NORMAL AT SOUTH BEND
INTERNATIONAL AIRPORT WHILE PRECIPITATION WAS ABOVE NORMAL.
TEMPERATURES VARIED SIGNIFICANTLY DURING THE MONTH...BUT AFTER A
VERY WARM FEBRUARY...MARCH FELT COLDER THAN NORMAL TO MANY PEOPLE.
THE MONTH BEGAN WITH SEVERE THUNDERSTORMS AND TEMPERATURES IN THE
50S BUT BY THE 3RD HIGHS WERE ONLY IN THE 20S AND LOWS WERE IN THE
TEENS AND LOWER 20S ACROSS THE REGION. TEMPERATURES WOULD WARM AGAIN
THOUGH WITH HIGHS BACK CLOSE TO 60 BY THE 5TH. THE REMAINDER OF THE
MONTH WOULD SEE SIMILAR SWINGS FROM WARM TO COLD. THE BIGGEST CHANGE
OCCURRED ON THE 23RD AND 24TH WHEN THE HIGH TEMPERATURE WENT FROM 48
ON THE 23RD TO 78 ON THE 24TH. 2 OF THE FINAL 6 DAYS OF MARCH
CONTAINED STRONG THUNDERSTORMS WITH PRECIPITATION TOTALS REACHING
HIGHER THAN 0.75 INCH OF RAIN EACH DAY.

THE AVERAGE MONTHLY TEMPERATURE WAS 36.9 DEGREES...0.6 DEGREES BELOW
NORMAL. THIS RANKED AS THE 68TH COOLEST MARCH ON RECORD. THERE WAS
4.23 INCHES OF PRECIPITATION...1.81 INCHES ABOVE NORMAL. THIS RANKED
AS THE 14TH WETTEST MARCH ON RECORD. SNOWFALL FOR MARCH WAS 7.9
INCHES...0.8 INCHES ABOVE NORMAL. THIS RANKED AS THE 56TH SNOWIEST
MARCH ON RECORD.

APRIL

...MILD APRIL WITH NEAR NORMAL PRECIPITATION...

TEMPERATURES AVERAGED ABOVE NORMAL FOR THE MONTH AT SOUTH BEND WHILE
PRECIPITATION WAS NEAR NORMAL THANKS TO JUST OVER ONE HALF INCH OF
RAINFALL ON THE LAST DAY OF THE MONTH. THERE WAS ONE DAY WITH
MEASURABLE SNOW ON APRIL 6TH BUT THE MONTHLY TOTAL WAS BELOW NORMAL.

IT WAS A RATHER TYPICAL APRIL WITH LARGE VARIATIONS IN TEMPERATURES.
DAILY HIGH TEMPERATURES RANGED FROM THE LOWER 40S TO THE LOWER 80S
WHILE DAILY LOW TEMPERATURES RANGED FROM THE UPPER 20S TO THE LOWER
60S. THE WARMEST TEMPERATURE FOR THE MONTH WAS 82 ON THE 26TH AND
THE COLDEST TEMPERATURE WAS 27 ON THE 8TH.

THE AVERAGE MONTHLY TEMPERATURE WAS 52.2...3.2 DEGREES ABOVE NORMAL.
THIS RANKED AS THE 15TH WARMEST APRIL ON RECORD. THERE WERE 12 DAYS
WITH AN AVERAGE TEMPERATURE BELOW NORMAL BUT THERE WERE NO DAYS WITH
AN AVERAGE TEMPERATURE MORE THAN 9 DEGREES BELOW NORMAL. IN
CONTRAST...THERE WERE 7 DAYS WITH AN AVERAGE TEMPERATURE OF AT LEAST
10 DEGREES OR MORE ABOVE NORMAL.

TOTAL PRECIPITATION FOR THE MONTH WAS 3.09 INCHES...0.14 INCHES
BELOW NORMAL. THIS RANKED AS THE 60TH DRIEST APRIL ON RECORD.
MEASURABLE PRECIPITATION FELL ON 14 DAYS.

THERE WAS 0.6 INCHES OF SNOW...ALL FALLING ON APRIL 6TH. THIS WAS
0.8 INCHES BELOW THE NORMAL OF 1.4 INCHES AND RANKED AS THE 51ST
LEAST SNOWIEST APRIL ON RECORD.

MAY

...A COOL AND WET MAY...

METEOROLOGICAL SPRING CAME TO AN END WITH A RATHER COOL AND WET MAY.
MEASURABLE PRECIPITATION FELL ON NEARLY HALF OF THE DAYS IN THE
MONTH AND TEMPERATURES WERE BELOW NORMAL ON 19 DAYS. THE AVERAGE
DAILY TEMPERATURE WAS AT OR BELOW NORMAL FOR THE FIRST 9 DAYS AND 6
OF THESE DAYS WERE 10 DEGREES OR MORE BELOW NORMAL. THERE WAS A NICE
STRETCH OF WEATHER FROM AROUND THE 14TH THROUGH THE 18TH WITH ABOVE
NORMAL TEMPERATURES AND NO PRECIPITATION. THIS BRIEF WINDOW DID
ALLOW MANY FARM FIELDS TO DRY OUT WHICH GAVE FARMERS A CHANCE TO GET
THEIR SPRING CROPS IN. UNFORTUNATELY THIS WINDOW CAME TO A QUICK
CLOSE AS MORE RAIN RETURNED WITH OVER AN INCH FALLING ON THE 19TH
AND 20TH COMBINED.

THE AVERAGE MONTHLY TEMPERATURE WAS 56.8...2.5 DEGREES BELOW NORMAL.
THIS RANKED AS THE 35TH COOLEST MAY ON RECORD. THE HIGHEST
TEMPERATURE WAS 85 ON THE 16TH AND 18TH AND THE COOLEST TEMPERATURE
WAS 28 ON THE 8TH. THERE WERE 3 DAYS DURING THE MONTH WITH A LOW
TEMPERATURE BELOW FREEZING.

MONTHLY PRECIPITATION WAS 4.92 INCHES...1.09 INCHES ABOVE NORMAL.
THIS RANKED AS THE 33RD WETTEST MAY ON RECORD. MEASURABLE
PRECIPITATION FELL ON 13 DAYS AND A HALF INCH OR MORE OF RAIN FELL
ON 4 DIFFERENT DAYS.

JUNE

...A DRY JUNE WITH NEAR NORMAL TEMPERATURES...

JUNE BEGAN RATHER DRY WITH LESS THAN MEASURABLE PRECIPITATION
OCCURRING ON THE FIRST 7 DAYS AND 0 OF THE FIRST 28 DAYS RECORDING
0.50 INCH OR GREATER OF RAIN. JUNE ALSO BEGAN WITH COOL TEMPERATURES
WITH 5 OF THE FIRST 8 DAYS HAVING BELOW NORMAL AVERAGE TEMPS.
HOWEVER, THE FOLLOWING 10 DAYS, FROM THE 9TH TO THE 18TH, HAD ABOVE
NORMAL TEMPS WITH 7 OF THOSE DAYS HAVING AVERAGE TEMPS OF 10 DEGREES
OR MORE ABOVE NORMAL. THAT 10 DAY PERIOD HAD 5 OF THE 6 DAYS OF THE
FIRST HALF OF THE MONTH WITH PRECIPITATION TOTALING 0.10 INCH OR
GREATER INDICATING A WETTER PERIOD. THE PERIOD FROM THE 19TH TO THE
30TH WAS GENERALLY A COOLER PERIOD WITH 7 DAYS OF BELOW NORMAL
TEMPERATURES, 3 DAYS OF ABOVE NORMAL TEMPERATURES AND 1 DAY OF
AVERAGE TEMPERATURES. THIS PERIOD ALSO CONTAINED THE 2 DAYS WITH THE
HIGHEST DAILY PRECIP TOTALS FOR THIS MONTH SO IT ENDED ON A RATHER
WET NOTE. IN TERMS OF CROP CONDITIONS, EARLY MONTH DRYNESS RESULTED
IN REDUCED TOPSOIL MOISTURE FOR CROP DEVELOPMENT, BUT MID MONTH
SHOWERS AND STORMS HELPED TO IMPROVE TOPSOIL MOISTURE AND RECOVER
CROP CONDITIONS.

THE AVERAGE MONTHLY TEMPERATURE WAS 69.8...0.7 DEGREES ABOVE NORMAL.
THIS RANKED AS THE 51ST WARMEST JUNE ON RECORD. THE HIGHEST
TEMPERATURE WAS 92 ON THE 12TH AND THE COOLEST TEMPERATURE WAS 46 ON
THE 1ST. THERE WERE 9 DAYS WITH AN AVERAGE TEMPERATURE DEPARTURE OF
5 DEGREES OR GREATER, AND THERE WERE 5 DAYS WITH AVERAGE TEMPERATURE
DEPARTURE OF -5 DEGREES OR LESS.

MONTHLY PRECIPITATION TOTALED 2.42 INCHES...1.37 INCHES BELOW
NORMAL. THIS RANKED AS THE 37TH DRIEST JUNE ON RECORD. MEASURABLE
PRECIPITATION FELL ON 14 DAYS BUT ONLY 4 DAYS RECEIVED GREATER THAN
0.24 INCH OF RAIN. THE LARGEST AMOUNT OF PRECIPITATION THIS JUNE
FELL ON THE 29TH WITH 0.52 INCH. INCIDENTALLY, THE NEXT DAY, THE
30TH, CAME WITHIN 0.01 INCH OF TYING THAT AMOUNT.

JULY

...BELOW NORMAL TEMPERATURES AND PRECIPITATION THIS MONTH...

TEMPERATURES AVERAGED A TOUCH BELOW NORMAL IN JULY AND PRECIPITATION
WAS SPREAD RATHER EVENLY THROUGHOUT THE MONTH LEADING TO A SLIGHTLY
BELOW NORMAL JULY. THERE WERE A COUPLE PERIODS OF WARM TEMPERATURES
AND VERY HUMID CONDITIONS, BUT THE HIGH TEMPERATURE NEVER REACHED 90
DEGREES DURING THE MONTH. THERE HAVE BEEN 10 OTHER YEARS AT SOUTH
BEND WHERE THE HIGH TEMPERATURE DURING JULY DID NOT REACH 90 DEGREES
AND FOUR OF THOSE YEARS HAVE BEEN SINCE 2000. THE LAST OCCURRENCE
WAS IN 2014. WHILE THE MONTH WILL OFFICIALLY GO DOWN AS BELOW
NORMAL, THERE WERE LOCATIONS SURROUNDING THE AIRPORT THAT SEEN MUCH
MORE IN THE WAY OF RAINFALL.

THE AVERAGE MONTHLY TEMPERATURE WAS 71.9 DEGREES, 1.1 DEGREES BELOW
NORMAL. THIS RANKED AS THE 38TH COOLEST JULY ON RECORD.

THERE WAS 3.75 INCHES OF PRECIPITATION, 0.25 BELOW NORMAL. THIS
RANKED AS THE 74TH DRIEST JULY ON RECORD.

AUGUST

IT WAS ANOTHER RELATIVELY COOL AND DRY SUMMER MONTH AT SOUTH BEND.
THE AVERAGE MONTHLY TEMPERATURE WAS MORE THAN 3 DEGREES BELOW NORMAL
AND PRECIPITATION WAS MORE THAN AN INCH BELOW NORMAL. THE
COMBINATION OF DRY AND RELATIVELY COOL WEATHER DID MAKE FOR A
COMFORTABLE MONTH WITH ONLY A FEW WARM AND MUGGY DAYS.

THERE WERE JUST 7 DAYS DURING AUGUST WITH AN AVERAGE TEMPERATURE
ABOVE NORMAL AND THERE WAS ONLY ONE DAY, THE 21ST, WITH AN AVERAGE
TEMPERATURE MORE THAN 5 DEGREES ABOVE NORMAL. THE REMAINING 24 DAYS
OF AUGUST SAW 3 DAYS WITH NORMAL AVERAGE TEMPERATURES AND 21 DAYS
WITH BELOW NORMAL TEMPERATURES. THE LAST 10 DAYS OF THE MONTH WERE
ALL BELOW NORMAL AND THERE WAS A STRETCH OF 11 STRAIGHT DAYS FROM
THE 4TH TO THE 14TH WITH BELOW NORMAL TEMPERATURES.

DESPITE ALL OF THE BELOW NORMAL TEMPERATURES...AUGUST OF 2017 WAS
JUST THE 13TH COOLEST AUGUST ON RECORD AT SOUTH BEND WITH AN AVERAGE
TEMPERATURE OF 68.0. THIS WAS 3.3 DEGREES BELOW NORMAL. THE COOLEST
AUGUST ON RECORD WAS 1915 WITH AN AVERAGE TEMPERATURE OF 65.5. THE
HIGHEST TEMPERATURE THIS AUGUST WAS 88 ON THE 16TH. ONLY 7 OTHER
AUGUST MONTHS HAVE HAD COOLER MONTHLY MAXIMUM TEMPERATURES AND THERE
HAVE BEEN 19 MONTHS OF AUGUST WHERE THE HIGH TEMPERATURE DID NOT
REACH 90 DEGREES. THE COOLEST TEMPERATURE WAS 45 ON THE 25TH. THIS
RANKED AS THE 25TH COOLEST AUGUST TEMPERATURE ON RECORD. THE RECORD
COOLEST AUGUST TEMPERATURE IS 40 SET IN 1911, 1927 AND 1965.

PRECIPITATION FOR THE MONTH WAS JUST 2.19 INCHES, 1.57 INCHES BELOW
NORMAL. THIS RANKED AS THE 30TH DRIEST AUGUST ON RECORD. THE YEAR
1950 HOLDS THE RECORD FOR THE DRIEST AUGUST WITH JUST 0.32 INCHES OF
PRECIPITATION. AUGUST 2017 HAD JUST 7 DAYS WITH MEASURABLE
PRECIPITATION. NEARLY HALF OF THE MONTHLY RAINFALL FELL ON THE 3RD
AND 4TH WITH A COMBINED 1.06 INCHES BEING RECORDED.

SEPTEMBER

...WARM AND DRY SEPTEMBER DESPITE COOL START...

SEPTEMBER WAS A WARM AND DRY MONTH WHICH EXPERIENCED MORE 90 DEGREE
DAYS (4) THAN THE COMBINED MONTHS OF MAY, JUNE, JULY AND AUGUST (3).
NEARLY THREE QUARTERS OF THE MONTHLY PRECIPITATION FELL ON JUST TWO
DAYS AND THERE WERE ONLY 9 DAYS WITH MEASURABLE PRECIPITATION. THE
FIRST HALF OF THE MONTH ACTUALLY BEGAN RATHER COOL AND WET BUT
QUICKLY TRANSITIONED TO VERY WARM AND DRY DURING THE SECOND HALF.

TWELVE OF THE FIRST FOURTEEN DAYS OF SEPTEMBER SAW BELOW NORMAL
TEMPERATURES. FOUR OF THESE TWELVE DAYS WERE 10 DEGREES OR MORE
BELOW NORMAL. MEASURABLE PRECIPITATION ALSO FELL ON 6 OF THE FIRST 8
DAYS IN SEPTEMBER. THE OVERALL WEATHER PATTERN ACROSS THE UNITED
STATES CHANGED DRASTICALLY MID MONTH AND THIS BROUGHT HEAT, HUMIDITY
AND VERY DRY CONDITIONS TO THE LOCAL AREA DURING THE LATTER HALF OF
THE MONTH. THERE WAS ONLY ONE DAY AFTER THE 13TH WITH AN AVERAGE
TEMPERATURE BELOW NORMAL AND THAT WAS ON THE 30TH.

THE PERIOD FROM SEPTEMBER 20TH TO THE 26TH WAS EXCEPTIONALLY WARM
WITH EACH DAY DURING THIS PERIOD AT LEAST 11 DEGREES ABOVE NORMAL
AND FOUR DAYS FROM THE 21ST TO THE 24TH HAD HIGH TEMPERATURES OF 90
DEGREES OR WARMER. INCREASED CLOUDS AND HUMIDITY KEPT HIGH
TEMPERATURES ON THE 25TH AND 26TH AT 89 DEGREES.

SO JUST HOW WARM WAS THIS PERIOD FROM THE 20TH TO THE 26TH COMPARED
TO PREVIOUS YEARS? THE AVERAGE TEMPERATURE DURING THIS STRETCH WAS
76.4 DEGREES WITH 4 DAYS HAVING A HIGH TEMPERATURE OF 90 OR HIGHER.
ONLY THE YEAR 1908 HAD A WARMER AVERAGE TEMPERATURE, 77.1, DURING
THIS SAME PERIOD WHILE ALSO RECORDING 5 DAYS WITH HIGH TEMPERATURES
OF 90 OR WARMER DURING THIS STRETCH. SEPTEMBER 1908 IS ALSO THE
WARMEST SEPTEMBER ON RECORD AND HAD A TOTAL OF 13 DAYS WITH A HIGH
TEMPERATURE OF 90 OR WARMER AND 5 DAYS WITH A HIGH OF 95 DEGREES.

THE AVERAGE MONTHLY TEMPERATURE FOR SEPTEMBER 2017 WAS 65.7, 1.8
DEGREES ABOVE NORMAL. THIS RANKED AS THE 37TH WARMEST SEPTEMBER ON
RECORD. THE HIGHEST TEMPERATURE WAS 91 ON THE 23RD AND THE COOLEST
TEMPERATURE WAS 40 ON THE 30TH.

THERE WAS JUST 2.04 INCHES OF PRECIPITATION RECORDED, 1.49 INCHES
BELOW NORMAL. THIS RANKED AS THE 35TH DRIEST SEPTEMBER ON RECORD.


OCTOBER

...NEAR RECORD PRECIPITATION AND WARM TEMPERATURES FOR OCTOBER...

THE FIRST THREE WEEKS OF OCTOBER WERE VERY WARM AND WET WHILE THE
LAST 8 DAYS WERE VERY COOL AND GENERALLY DRY. SOUTH BEND RECEIVED
OVER 9 INCHES OF RAINFALL WHICH WAS JUST ABOUT A HALF INCH SHY OF
THE RECORD FOR WETTEST OCTOBER.

THROUGH THE FIRST 23 DAYS OF THE MONTH, TEMPERATURES WERE AT OR
ABOVE NORMAL ON ALL BUT ONE DAY. EACH DAY FROM THE 24TH THROUGH THE
31ST WAS BELOW NORMAL WITH THREE DAYS AT LEAST 10 DEGREES BELOW
NORMAL. THE FIRST WIDESPREAD FROST AND FREEZE OCCURRED DURING THIS
LAST WEEK OF OCTOBER, WHICH WAS LATER THAN NORMAL.

THE AVERAGE MONTHLY TEMPERATURE WAS 55.9 DEGREES, 3.8 DEGREES ABOVE
NORMAL. THIS RANKED AS THE 22ND WARMEST OCTOBER ON RECORD. THE
WARMEST TEMPERATURE WAS 83 ON THE 7TH AND THE COLDEST WAS 29 ON THE
26TH. THERE WERE 4 MORNINGS WITH A LOW TEMPERATURE AT OR BELOW 32
DEGREES.

MONTHLY PRECIPITATION TOTALED 9.13 INCHES, 5.81 INCHES ABOVE NORMAL.
THIS RANKED AS THE 3RD WETTEST OCTOBER ON RECORD. THE WETTEST
OCTOBER IS 1954 WITH 9.75 INCHES OF PRECIPITATION. SEVERAL DAILY
RAINFALL RECORDS WERE BROKE THIS MONTH. THE FIRST OCCURRED ON
OCTOBER 11TH WHEN 1.62 INCHES OF RAIN FELL, BREAKING THE OLD RECORD
OF 1.43 INCHES SET IN 1931. THE SECOND RECORD WAS BROKEN ON OCTOBER
14TH WHEN 3.81 INCHES OF RAIN FELL. THE PREVIOUS RECORD FOR THIS
DATE WAS 2.12 INCHES SET IN 1970. THIS RECORD RAINFALL ON THE 14TH
WAS ALSO AN ALL-TIME SINGLE DAY RECORD FOR THE MONTH OF OCTOBER. THE
PREVIOUS ONE DAY RECORD OCTOBER RAINFALL WAS 3.47 INCHES SET ON
OCTOBER 17TH 1988.

THERE WAS A TRACE OF SNOWFALL RECORDED ON THE 28TH. NORMAL OCTOBER
SNOWFALL IS 0.4 INCHES.

NOVEMBER

...NOVEMBER WAS COOL WITH NEAR NORMAL PRECIPITATION...

WHILE THE LAST WEEK OF NOVEMBER EXPERIENCED NEAR NORMAL TO ABOVE
NORMAL TEMPERATURES AND BELOW NORMAL PRECIPITATION...THE BEGINNING
TO MIDDLE PORTION OF THE MONTH WAS COLD AND GENERALLY WET. THE
COOLER TEMPERATURES WERE A REVERSAL FROM A VERY WARM BUT WET
OCTOBER. DESPITE BEING COOL AND WET, ONLY A TRACE OF SNOWFALL WAS
RECORDED DURING THE ENTIRE MONTH.

THE AVERAGE MONTHLY TEMPERATURE WAS 38.9 DEGREES, 1.8 DEGREES BELOW
NORMAL. THIS RANKED AS THE 39TH COOLEST NOVEMBER ON RECORD AT SOUTH
BEND. THE WARMEST TEMPERATURE WAS 61 ON THE 5TH AND 28TH. THE
COLDEST TEMPERATURE OF 21 OCCURRED ON THE 10TH AND 26TH.

TOTAL PRECIPITATION FOR THE MONTH WAS 3.40 INCHES WHICH WAS 0.13
INCHES ABOVE NORMAL. THIS RANKED AS THE 37TH WETTEST NOVEMBER ON
RECORD. NEARLY HALF OF THE TOTAL MONTHLY PRECIPITATION FELL ON JUST
TWO DAYS, THE 17TH AND 18TH WITH 1.56 INCHES BEING MEASURED. A TOTAL
OF 11 DAYS SAW MEASURABLE PRECIPITATION FALL.

THERE WAS ONLY A TRACE OF SNOWFALL RECORDED IN NOVEMBER. SINCE A
TRACE IS CONSIDERED NON-MEASURABLE, THIS TIED WITH 7 OTHER YEARS IN
WHICH NO MEASURABLE SNOWFALL OCCURRED IN NOVEMBER. FIVE OF THESE 8
YEARS WITH NO MEASURABLE SNOWFALL HAVE OCCURRED SINCE 2001.

DECEMBER

...IN WITH THE WARMTH, OUT WITH THE COLD...

AFTER A BRUTALLY COLD AND SNOWY STRETCH OF WEATHER TO END DECEMBER,
IT IS HARD TO REMEMBER THAT THE MONTH BEGAN WITH NEAR RECORD WARMTH
AND TEMPERATURES IN THE 50S AND 60S. THOSE WARM TEMPERATURES LASTED
ABOUT 5 DAYS BEFORE A 10 DAY STRETCH OF BELOW NORMAL TEMPERATURES
FOLLOWED BY ANOTHER PERIOD OF 8 DAYS ABOVE NORMAL. THAT WOULD BE THE
END TO ANY WARMTH THOUGH AS BITTERLY COLD AIR STRAIGHT OUT OF
SIBERIA FLUSHED INTO THE CENTRAL AND EASTERN UNITED STATES FOR THE
LAST 8 DAYS OF DECEMBER. TEMPERATURES WERE MORE THAN 20 DEGREES
BELOW NORMAL DURING THIS PERIOD WITH MEASURABLE SNOWFALL ON EVERY
DAY.

A FEW DAILY TEMPERATURE RECORDS WERE SET OR TIED DURING THE COLD END
TO THE MONTH. A RECORD COLD MAXIMUM TEMPERATURE OF 8 DEGREES WAS
RECORDED ON THE 26TH. THIS BROKE THE PREVIOUS RECORD OF 10 SET IN
1925.  THIS HIGH OF 8 DEGREES WAS ALSO THE 9TH COLDEST HIGH
TEMPERATURE EVER RECORDED IN DECEMBER. A RECORD COLD MAXIMUM
TEMPERATURE OF 12 DEGREES WAS ALSO RECORDED ON THE 31ST. THIS TIED
THE PREVIOUS RECORD SET IN 1899. THE MONTH ENDED WITH 6 STRAIGHT
DAYS HAVING HIGH TEMPERATURES LESS THAN 20 DEGREES. THIS WAS THE
SECOND LONGEST SUCH STREAK AT SOUTH BEND, SHY OF THE RECORD BY JUST
1 DAY. THE RECORD OF 7 CONSECUTIVE DECEMBER DAYS WITH HIGH
TEMPERATURES BELOW 20 DEGREES WAS SET IN 1901, 1917 AND 1958.

THE AVERAGE MONTHLY TEMPERATURE WAS 25.5, 3.3 DEGREES BELOW NORMAL.
THIS RANKED AS THE 31ST COLDEST DECEMBER ON RECORD. THE WARMEST
TEMPERATURE WAS 61 ON THE 4TH AND THE COLDEST WAS 6 BELOW ON THE
28TH. THE PERIOD OF DECEMBER 26TH TO DECEMBER 31ST HAD AN AVERAGE
TEMPERATURE OF 5.8 DEGREES WHICH WAS THE COLDEST EVER RECORDED
DURING THIS 6 DAY STRETCH.

PRECIPITATION FOR THE MONTH WAS 1.36 INCHES, 1.25 INCHES BELOW
NORMAL. THIS WAS THE 18TH DRIEST DECEMBER ON RECORD, YET MEASURABLE
PRECIPITATION FELL ON 18 DAYS. DESPITE HAVING WELL BELOW NORMAL
PRECIPITATION, SNOWFALL FOR THE MONTH WAS WELL ABOVE NORMAL. A TOTAL
OF 32.4 INCHES WAS RECORDED WHICH WAS 15.1 INCHES ABOVE NORMAL. THIS
RANKED AS THE 8TH SNOWIEST DECEMBER ON RECORD. THE DISPARITY BETWEEN
PRECIPITATION AND SNOWFALL WAS DUE TO THE VERY COLD TEMPERATURES AT
THE END OF THE MONTH. THIS CREATED VERY LARGE LIQUID TO SNOW RATIOS
WHICH LED TO VERY EFFICIENT SNOW MAKING PROCESSES.

$$
LASHLEY


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