Climatological Report (Annual)
Issued by NWS La Crosse, WI

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000
CXUS53 KARX 012154
CLARST

CLIMATE REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
819 AM CST FRI JAN 1 2016

...2015 CLIMATE SUMMARY FOR ROCHESTER...


  TEMPERATURESPRECIPITATION
MONTHHIGH LOW     AVEDEPT   TOTAL     DEPTSNOW
JAN24.2 9.616.9+1.20.62-0.2410.0
FEB17.1-1.6 7.8   -12.50.65-0.1810.6
MAR42.022.932.5+0.11.07-0.8110.9
APR58.337.147.7+1.04.93+1.691.5
MAY67.048.457.7-0.45.25+1.620.0
JUN77.257.467.3-0.34.46-0.22***
JUL79.459.669.5-1.94.94+0.39***
AUG75.957.266.5-2.63.16-1.36***
SEP76.356.166.2+5.32.88-0.57***
OCT60.940.050.5+2.11.26-0.980.2
NOV47.830.939.3+5.53.08+1.172.3
DEC34.924.829.8   +10.13.21+1.98  13.2
==============================================================
YEAR55.136.746.0+0.635.51+2.49***


*** RECORDS *******************************************************

TEMPERATURES...

HIGHS:93 ON JUNE 9TH...TIED PREVIOUS YEARS
84 ON OCTOBER 11TH

LOWS:NONE

LOWEST HIGHS:NONE

HIGHEST LOWS:70 ON SEPTEMBER 4TH
59 ON SEPTEMBER 28TH...TIED PREVIOUS YEARS
39 ON DECEMBER 10TH
38 ON DECEMBER 12TH
40 ON DECEMBER 13TH

MONTHLY:5TH COLDEST FEBRUARY AT 7.8 DEGREES
2ND WARMEST SEPTEMBER AT 66.2 DEGREES
6TH WARMEST NOVEMBER AT 39.3 DEGREES
2ND WARMEST DECEMBER AT 29.8 DEGREES

SEASONAL:3RD WARMEST FALL AT 52.0 DEGREES

YEARLY:8TH WARMEST AT 46.0 DEGREES...TIED WITH PREVIOUS YEARS

*** DISCUSSION ****************************************************

UNLIKE THE PREVIOUS YEAR...2015 DID NOT GET OFF TO A FRIGID START.
ASIDE FROM A 10 DAY STRETCH WITH BELOW NORMAL TEMPERATURES /4TH
THROUGH 13TH/...JANUARY WAS RELATIVELY MILD. HIGHS WERE ABOVE
FREEZING 9 DAYS /AVERAGE IS 7/ WITH LOWS UNDER 20 DEGREES 19 TIMES
/AVERAGE IS 25/ - TIED FOR 7TH LEAST IN A JANUARY. IT WAS A DRY
MONTH...RECEIVING ONLY 60% OF THE JANUARY NORMAL. MEASURABLE SNOW
FELL ON 9 DAYS - RIGHT AROUND NORMAL - BUT ONLY AMOUNTED TO 9.4
INCHES. IN ADDITION...DAILY AMOUNTS HELD UNDER 2 INCHES FOR THE
ENTIRE MONTH. THIS OCCURS LESS THAN 2 OUT OF EVERY 10 YEARS.

THE ICEBOX RETURNED IN FEBRUARY WITH AN AVERAGE TEMPERATURE OVER 12
DEGREES BELOW NORMAL...MAKING IT THE 5TH COLDEST FEBRUARY ON RECORD.
LOWS DROPPED BELOW ZERO ON 15 DAYS...WELL ABOVE THE AVERAGE OF 8
DAYS AND TYING IT FOR 7TH MOST IN A FEBRUARY. HIGHS HELD IN THE
SINGLE DIGITS 9 TIMES /NEVER GETTING ABOVE ZERO ON THE 18TH/ AND
ONLY WARMED ABOVE FREEZING ON 3 DAYS. THE 10.6 INCH SNOW TOTAL WAS
ABOUT 2 INCHES ABOVE NORMAL. THERE WERE 7 DAYS WITH MEASURABLE
SNOWFALL.

BY ITS OWN STANDARDS...MARCH/S AVERAGE TEMPERATURE WAS NORMAL.
HOWEVER...THERE WERE SIGNIFICANT SWINGS DAY TO DAY...WEEK TO WEEK.
ROCHESTER HAD A HIGH OF ONLY 9 DEGREES ON THE 5TH...YET WOULD WARM
TO 62 BY THE 13TH.  THAT 9 DEGREE DAY WAS ONLY THE 23RD TIME ON
RECORD THAT A MARCH DAY FAILED TO WARM TO 10 OR BETTER. TO FURTHER
ILLUSTRATE THE ROLLER COASTER THAT WAS MARCH...HIGHS WARMED TO 60 OR
HIGHER ON 5 DAYS...BUT FAILED TO WARM ABOVE FREEZING ON 7 DAYS.
MARCH LOOKED LIKE IT MIGHT BE A VERY DRY MONTH WITH ONLY ONE DAY OF
ACCUMULATING PRECIPITATION - FOR ONLY A MERE 0.3 INCHES OF SNOW -
THROUGH THE 21ST. SNOW THEN FELL ON 4 CONSECUTIVE DAYS...WITH THE
BULK OF THE MONTH/S 10.9 INCH TOTAL FALLING ON THE 22ND /7.4" - TIED
FOR 15TH SNOWIEST MARCH DAY ON RECORD/.  THE 10 INCH SNOW DEPTH ON
THE MORNING OF THE 25TH DID NOT STICK AROUND LONG...MELTING AWAY BY
THE 30TH.

TYPICAL FOR A SPRING MONTH...APRIL EXPERIENCED THE WILD SWINGS IN
TEMPERATURE THAT OCCURRED IN MARCH. THERE WERE MORE DAYS WITH HIGHS
IN THE 40S AND 50S /13/ THAN IN THE 70S AND 80S /10/.
IRONICALLY...THE 82 DEGREE HIGH FOR THE MONTH CAME ON THE 1ST.  IT
WAS ALSO WELL AHEAD OF THE NORMAL FIRST 80 DEGREE DAY IN A YEAR
/APRIL 29TH/. OVER 4 INCHES OF PRECIPITATION FELL IN APRIL...ALMOST
1 1/2 INCHES ABOVE NORMAL. HOWEVER...NEARLY 2/3RDS OF THAT TOTAL
CAME ON THE 7TH AND 9TH...WITH ONLY AROUND AN INCH THEN FALLING
THROUGH THE END OF THE MONTH. APRIL DID SQUEEZE OUT SOME MORE SNOW
THOUGH WITH MINOR ACCUMULATIONS ON THE 9TH AND 22ND /TOTAL OF 1/2
INCH FOR MONTH/.

NOT MUCH CONSISTENCY IN TEMPERATURES FOR MAY EITHER...ALTHOUGH IT
DID MANAGE TO FINISH ABOVE NORMAL. HIGHS WARMED TO 80 DEGREES OR
HIGHER 10 TIMES...BUT COULDN/T MANAGE TO GET OUT OF THE 50S AND 60S
ON 12 DAYS. THE WET TREND WOULD CONTINUE...BUT A BIT MORE SPREAD OUT
COMPARED TO APRIL. MEASUREABLE RAIN FELL ON 16 DAYS...WITH 5 OF
THOSE RECORDING OVER 3/4RDS OF AN INCH. THE 6.41 INCH MONTHLY TOTAL
MADE IT THE 12TH WETTEST MAY ON RECORD.

ON THE WHOLE...MARCH...APRIL AND MAY WOULD FINISH AMONGST THE TOP 20
SPRING/S FOR TEMPERATURE AND PRECIPITATION /17TH WARMEST AND 18TH
WETTEST RESPECTIVELY/.

JUNE WAS AROUND NORMAL FOR TEMPERATURES AND A BIT BELOW IN TERMS OF
RAINFALL. THE WARMEST TEMPERATURE OF THE YEAR OCCURRED ON THE 9TH
WITH A HIGH OF 96 DEGREES. HOWEVER...IT WOULD BE THE ONLY TIME IT
WARMED INTO THE 90S ALL MONTH. IRONICALLY...THE COLDEST HIGH
OCCURRED JUST A COUPLE DAYS LATER - 66 DEGREES ON THE 11TH. EVEN
THOUGH PRECIPITATION WAS BELOW NORMAL...WHAT FELL WAS SPREAD ACROSS
JUNE...WITH NO MORE THAN 4 DAYS BETWEEN ACCUMULATING RAINFALL.

JULY GOT OFF TO A RELATIVELY COOL START WITH BELOW NORMAL
TEMPERATURES ON 10 OF THE FIRST 11 DAYS. SUMMERY CONDITIONS SETTLED
IN AFTER THAT WITH HIGHS 82 DEGREES OR WARMER FROM THE 17TH THROUGH
MONTH/S END. RAINFALL WAS BELOW NORMAL FOR THE SECOND STRAIGHT MONTH
- AND GOT OFF TO A VERY DRY START. THERE WAS ONLY 1 DAY OF
ACCUMULATING RAINFALL THROUGH THE 12TH WITH 0.40 INCHES DROPPING ON
THE 6TH.  AFTER THAT THOUGH...RAIN CAME ON A FAIRLY REGULAR
BASIS...FALLING EVERY FEW DAYS.


AUGUST CONTINUED THE COOL TREND...FINISHING AROUND 2 1/2 DEGREES
BELOW NORMAL. TEMPERATURES WERE BELOW NORMAL ON NEARLY 2 OUT OR
EVERY 3 DAYS WITH HIGHS FAILING TO WARM OUT OF THE 60S ON 5 DAYS.
AUGUST WAS DRY COMPARED TO ITS NORMAL...WITH THE FIRST 2 WEEKS
RESPONSIBLE FOR MUCH OF THE DEFICIT. MEASURABLE RAIN FELL ON ONLY 2
DAYS DURING THE FIRST 15 DAYS...AMOUNTING TO A MERE 0.06 INCHES.

SEPTEMBER STARTED VERY WARM AS HIGHS TOPPED OUT IN THE 80S THE FIRST
6 DAYS. IT WAS THE THIRD WARMEST START TO A SEPTEMBER IN
ROCHESTER...AVERAGING 76.8 DEGREES DURING THAT PERIOD /1960 WAS THE
WARMEST AT 81.3 DEGREES/. ASIDE FROM A FEW COOLER DAYS AT MID-MONTH
AND RIGHT AT THE END...IT WOULD STAY WARM AND FINISH AS THE 2ND
WARMEST SEPTEMBER ON RECORD AT 66.2 DEGREES. HIGHS WERE 80 DEGREES
OR HIGHER 10 TIMES - AVERAGE IS 7. IN ADDITION...HIGHS ONLY FAILED
TO CRACK 70 SIX TIMES...BELOW THE AVERAGE OF 13 AND TIED FOR 4TH
FEWEST. INTERESTINGLY...THERE WERE NO RECORD HIGH TEMPERATURES FOR
THE MONTH...AND ONLY TWO HIGHEST LOWS. SEPTEMBER WAS BELOW NORMAL
FOR PRECIPITATION...WITH MOST OF IT FALLING IN THE FIRST HALF OF THE
MONTH. AFTER THE 17TH...THERE WERE ONLY TWO DAYS WITH MEASURABLE
RAIN...AND THOSE ONLY AMOUNTED TO 0.06 INCHES.

WHILE OCTOBER WOULD FINISH ABOVE NORMAL FOR TEMPERATURES...THERE WAS
QUITE A BIT OF FLUCTUATION. FOR EXAMPLE...IT WAS 84 DEGREES ON THE
11TH...THE HIGH FOR THE MONTH AND THE LAST 80 PLUS DEGREE DAY OF
2015. JUST TWO DAYS LATER...THE HIGH WAS ONLY 60. THE FIRST FREEZING
TEMPERATURE OF THE FALL SEASON CAME ON THE MORNING OF THE 16TH WITH
27 DEGREES. THIS WAS OVER TWO WEEKS LATER THAN AVERAGE. THE DRY
TREND OF LATE SEPTEMBER PERSISTED INTO OCTOBER WITH ONLY ONE DAY OF
ACCUMULATING RAINFALL THROUGH THE 22ND...AND THAT WAS ONLY 0.01
INCHES ON THE 8TH. IT TIED FOR THE 4TH DRIEST START TO AN OCTOBER ON
RECORD. THE LAST 9 DAYS WOULD TRY TO MAKE UP FOR THIS
DEFICIT...RAINING ON 7 OF THOSE FOR ALMOST THE ENTIRE 1.26 INCH
OCTOBER TOTAL. THIS LATE BURST HELPED...BUT STILL KEPT IT ABOUT AN
INCH BELOW NORMAL.

NOVEMBER CONTINUED THE WARM CONDITIONS OF SEPTEMBER AND HELPED ROUND
OUT THE FALL MONTHS AS THE 2ND WARMEST ON RECORD AT 52.0 DEGREES. IT
WAS THE 6TH WARMEST NOVEMBER AT 39.3 DEGREES. AT OR ABOVE NORMAL
TEMPERATURES OCCURRED ON ALL BUT 6 DAYS IN NOVEMBER...WITH THE
WARMEST STRETCH DURING THE FIRST 2 PLUS WEEKS OF THE MONTH.  LOW
TEMPERATURES AT OR BELOW FREEZING ONLY OCCURRED ON 16 DAYS...TIED
FOR FOURTH LEAST IN A NOVEMBER...AND WELL BELOW THE AVERAGE OF 24
SUCH DAYS. PRECIPITATION WAS ABOVE NORMAL FOR THE MONTH. THE BULK
CAME AT MID-MONTH WITH OVER 70 PERCENT FALLING BETWEEN THE 11TH AND
THE 20TH. THE FIRST MEASURABLE SNOW FELL IN NOVEMBER WITH 1.3 INCHES
ON THE 20TH. THIS IS OVER TWO WEEKS LATER THAN THE AVERAGE FIRST
MEASURABLE NOW IN ROCHESTER /NOV 5TH/.

DECEMBER ROUNDED OUT 2015 VERY MILD AND WET...SETTING RECORDS FOR
BOTH. DAILY TEMPERATURES WERE ABOVE NORMAL ON ALL BUT 3 DAYS WITH
HIGHS REACHING OR EXCEEDING 40 DEGREES ON 13 DAYS /AVERAGE IS ONLY
4/. THE AVERAGE LOW TEMPERATURE OF 24.8 DEGREES WAS ONLY 2.3 DEGREES
OFF THE NORMAL AVERAGE HIGH TEMPERATURE FOR DECEMBER. LOWS ONLY
DROPPED INTO THE SINGLE DIGITS 3 TIMES - TIED FOR 5TH LEAST IN A
DECEMBER AND WELL BELOW THE AVERAGE OF 13. THE MILD TEMPERATURES
KEPT MUCH OF DECEMBER/S PRECIPITATION AS RAIN...WITH THE TOTAL OF
3.21 INCHES MAKING IT THE 2ND WETTEST ON RECORD.  LESS THAN 2
INCHES OF SNOW FELL THROUGH THE 22ND...BUT ALMOST 4 INCHES WOULD
FALL ON THE 23RD WITH ANOTHER 8.5 INCHES COMING ON THE 28TH AND
29TH. THE LATE MONTH DUMPING BROUGHT THE TOTAL FOR THE MONTH ABOVE
ITS NORMAL.

2015 WILL BE REMEMBERED MORE FOR HOW IT ENDED RATHER THAN STARTED. A
STRONG EL NINO PLAYED A SIGNIFICANT ROLE IN MAKING IT VERY MILD. THE
LAST 4 MONTHS OF THE YEAR WERE THE 2ND WARMEST ON RECORD FOR
ROCHESTER. THE ONLY MONTH OF THE FOUR TO NOT SET A TOP 10 RECORD WAS
OCTOBER. SEVEN OF THE MONTHS OF 2015 WERE ABOVE NORMAL...WITH THE
ONLY SIGNIFICANTLY COLD MONTH COMING IN FEBRUARY. WHILE THE YEAR
FINISHED ABOVE NORMAL FOR PRECIPITATION...MUCH OF THAT WAS DUE TO A
WET SPRING AND RAINY EARLY START TO THE WINTER.

***********************************************************************

HIGHEST TEMPERATURES OF 2015............................. 93 ON JUNE 9TH
LOWEST TEMPERATURE OF 2015.................. -17 ON JAN 13TH AND FEB 5TH
HIGHEST ONE-DAY PRECIPITATION.................. 1.67 INCHES ON JULY 28TH
HIGHEST ONE-DAY SNOWFALL....................... 7.4 INCHES ON MARCH 22ND
NUMBER OF DAYS WITH HIGHS AT OR ABOVE 90 DEGREES.....................  1
NUMBER OF DAYS WITH HIGHS AT OR BELOW 32 DEGREES..................... 70
NUMBER OF DAYS WITH ZERO OR BELOW TEMPERATURES....................... 27
PEAK WIND GUST............................ 56 MPH FROM THE SE ON MAY 6TH
NUMBER OF DAYS WITH MEASURABLE PRECIPITATION........................ 119
PERCENTAGE OF DAYS WITH MEASURABLE PRECIPITATION.................... 33%
NUMBER OF DAYS WITH ABOVE NORMAL TEMPERATURES....................... 208
PERCENTAGE OF DAYS WITH ABOVE NORMAL TEMPERATURES................... 57%

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

...THE ROCHESTER CLIMATE SUMMARY FOR THE YEAR OF 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             108   07/14/1936
 LOW              -42   01/07/1887
HIGHEST            93   06/09        MM      MM       87  08/24
LOWEST            -17   02/05        MM      MM      -23  01/06
                        01/13
AVG. MAXIMUM     55.1              54.7     0.6     50.9
AVG. MINIMUM     36.7              36.2     0.5     32.8
MEAN             46.0              45.4     0.6     41.9
DAYS MAX >= 90      1               6.1    -5.1        0
DAYS MAX <= 32     70              71.1    -1.1       97
DAYS MIN <= 32    132             148.8   -16.8      162
DAYS MIN <= 0      27              24.0     3.0       48

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        41.76   2013
 MINIMUM        24.85   2012
TOTALS          35.51             33.02    2.49    33.26
DAYS >= .01       119             120.6    -1.6      134
DAYS >= .10        69              62.2     6.8       70
DAYS >= .50        24              20.5     3.5       23
DAYS >= 1.00        9               6.9     2.1        6
GREATEST
 24 HR. TOTAL    1.67   MM                       12/31 TO 12/31
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31
 STORM TOTAL     0.57                               1.18
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)
                                                 12/31(00) TO 12/31(00)1
                                                 12/31(00) TO 12/31(00)1

SNOWFALL (INCHES)
RECORDS
 TOTAL           73.9   2013
 24 HR TOTAL     15.0   MM
TOTALS           48.7              51.9    -3.2     63.5
SINCE 7/1        15.7              19.4    -3.7     17.4
DAYS >= TRACE      55              39.9    15.1       82
DAYS >= 1.0        16              15.2     0.8       20
GREATEST
 SNOW DEPTH        10   12/30
                        03/25
                        02/07
 24 HR TOTAL      7.4   MM                       12/31 TO 12/31
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31
 STORM TOTAL      0.2                                3.9
 (MM/DD(HH))            MM                    12/31(00) TO 12/31(00)
                                                 12/31(00) TO 12/31(00)1
                                                 12/31(00) TO 12/31(00)1

DEGREE_DAYS
HEATING TOTAL    7279              7720    -441     8843
 SINCE 7/1         MM              3078      MM       MM
COOLING TOTAL     507               585     -78      491
 SINCE 1/1        507               585     -78      491

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
..................................................

WIND (MPH)
AVERAGE WIND SPEED              11.8
HIGHEST WIND SPEED/DIRECTION    41/270    DATE  11/19
HIGHEST GUST SPEED/DIRECTION    56/210    DATE  05/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR          185
NUMBER OF DAYS PC             99
NUMBER OF DAYS CLOUDY         81

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             41     MIXED PRECIP               1
HEAVY RAIN               35     RAIN                      55
LIGHT RAIN              111     FREEZING RAIN              1
LT FREEZING RAIN         10     HAIL                       0
HEAVY SNOW                4     SNOW                      15
LIGHT SNOW               54     SLEET                      2
FOG                     203     FOG W/VIS <= 1/4 MILE     35
HAZE                     62

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

$$

BOYNE


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