Meteorological Winter Summaries for La Crosse WI & Rochester MN

The meteorlogical winter of 2009-10 was colder, wetter, and snowier than normal at both La Crosse WI and Rochester MN.  For detailed information on this winter, check out the summaries below.

...Another Cold...Wet...and Snowy Meteorological Winter in La Crosse WI...

During Meteorological Winter (December 1 through February 28), La Crosse Municipal Airport was colder than normal, and both precipitation and snowfall were above normal.  This was the third consecutive winter that this has occurred. The information below provides more details on these statistics.

Temperatures -

From December 1st through February 28th, the average temperature at La Crosse Municipal Airport was 18.2 degrees.  This was 1.8 degrees colder than the 1971-2000 average of 20.0 degrees.  The average maximum temperature was 25.9 degrees.  This was 3.3 degrees colder than the 1971-2000 average of 29.2 degrees. The average minimum temperature was 10.5 degrees.  This was 0.3 degrees colder than the 1971-2000 average of 10.8 degrees.

The table below contains the monthly temperatures and their departures from normal for the winter of 2009-10.

          Winter 2009-10 Temperatures
               in La Crosse WI

                  Average            Departure
   Month        Temperature         from Normal
   -----        -----------         -----------
 December       20.1 degrees        -1.7 degrees
 January        14.8 degrees        -1.1 degrees
 February       19.8 degrees        -2.8 degrees
 
 Winter         18.2 degrees        -1.8 degrees


Precipitation - 9th Wettest - Wettest Winter since 1936-37

From December 1st through February 28th, La Crosse Municipal Airport received 5.61 inches of precipitation.  This was 2.20 inches above the winter normal of 3.41 inches.  This was the ninth wettest winter.  This was the wettest winter since 1936-37.  The table below lists the top ten wettest meteorological winters.

      Top Ten Wettest Meteorological Winters
                in La Crosse WI

                  Precipitation
        Rank          Total         Winter
        ----      -------------     ------
          1        7.47 inches     1875-1876
          2        6.37 inches     1921-1922
          3        6.24 inches     1931-1932
          4        6.22 inches     1885-1886
          5        5.94 inches     1891-1892
          6        5.76 inches     1914-1915
          7        5.70 inches     1928-1929
          8        5.64 inches     1936-1937
          9        5.61 inches     2009-2010
         10        5.46 inches     1927-1928


The table below contains the monthly precipitation totals and their departures from normal for the winter of 2009-10.

          Winter 2009-10 Precipitation
               in La Crosse WI

                Precipitation         Departure
   Month            Total            from Normal
   -----        ------------         -----------
 December        3.36 inches        +2.13 inches
 January         1.46 inches        +0.27 inches
 February        0.97 inches        -0.20 inches
 
 Winter          5.61 inches        +2.20 inches


Snowfall - 

From December 1st through February 28th, the snow observer near La Crosse Municipal Airport received 39.4 inches of snow.  This was 8.9 inches above the normal of 30.5 inches.  The table below contains the monthly snowfall totals and their departures from normal for the winter of 2009-10.

           Winter 2009-10 Snowfall
               in La Crosse WI

                  Snowfall            Departure
   Month            Total            from Normal
   -----        ------------         -----------
 December        24.9 inches        +15.3 inches
 January          5.0 inches        - 7.9 inches
 February         9.5 inches        + 1.5 inches
 
 Winter          39.4 inches        + 8.9 inches


Snow Depth -

The average snow depth was 9 inches.  This was the greatest since the meteorological winter of 2000-01 /also 9 inches/.  This winter was tied with 1909-10...1916-17... 1919-20...1950-51...1981-82...and 2000-01 for the 6th greatest average snow depth during a meteorological winter.  The greatest average snow depth was 15 inches during the winter of 1978-79 winter. The table below lists the top ten meteorological winters with greatest average snow depth.

       Top Ten Greatest Average Snow Depth
         during a Meteorological Winter
                in La Crosse WI

                    Average
        Rank       Snow Depth       Winter
        ----       ----------       ------
          1        15 inches      1978-1979
          2        14 inches      1928-1929
          3        13 inches      1942-1943
          4        12 inches      1968-1969
          5        11 inches      1970-1971
          6         9 inches      2009-2010
                    9 inches      2000-2001
                    9 inches      1981-1982
                    9 inches      1950-1951
                    9 inches      1919-1920
                    9 inches      1916-1917
                    9 inches      1909-1910


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

...THE LA CROSSE CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2009 TO 2/28/2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1873 TO 2010

WEATHER OBSERVED
VALUE DATE(S)

................................
TEMPERATURE (F)
HIGHEST 49 12/01
LOWEST -16 01/03
AVG. MAXIMUM 25.9
AVG. MINIMUM 10.5
MEAN 18.2
DAYS MAX >= 90 0
DAYS MAX <= 32 77
DAYS MIN <= 32 90
DAYS MIN <= 0 22

PRECIPITATION (INCHES)
TOTALS 5.61
DAYS >= .01 29
DAYS >= .10 13
DAYS >= .50 5
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 1.05 MM

SNOWFALL (INCHES)
TOTALS 39.4
SNOWDEPTH AVG. 9
DAYS >= TRACE 56
DAYS >= 1.0 12
GREATEST
SNOW DEPTH 17
24 HR TOTAL 9.0 MM

DEGREE_DAYS
HEATING TOTAL 4191
COOLING TOTAL 0
.................................

WIND (MPH)
AVERAGE WIND SPEED 7.0
HIGHEST GUST SPEED/DIRECTION 40/330 DATE 12/09

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

T INDICATES TRACE AMOUNT.

...Another Cold and Snowy Meteorological Winter in Rochester MN...

During Meteorological Winter (December 1 through February 28), Rochester International Airport averaged colder than normal for temperatures, slightly above normal for precipitation, and much above normal snowfall.  This was the second winter in a row that this has occurred. The information below provides more details on these statistics.

Temperatures...

From December 1st through February 28th, Rochester International Airport had an average temperature of 14.5 degrees.  This was 1.3 degrees colder than the 1971-2000 normal of 15.8 degrees. The average maximum temperature was 21.8 degrees.  This was 1.6 degrees colder than the 1971-2000 average of 23.4 degrees. The average minimum temperature was 7.2 degrees.  This was 0.9 degrees colder than the 1971-2000 average of 8.1 degrees.

The table below contains the monthly temperatures and their departures from normal for the winter of 2009-10.

          Winter 2009-10 Temperatures
               in Rochester MN

                  Average            Departure
   Month        Temperature         from Normal
   -----        -----------         -----------
 December       16.7 degrees        -0.6 degrees
 January        11.0 degrees        -0.8 degrees
 February       15.7 degrees        -2.7 degrees
 
 Winter         14.5 degrees        -1.3 degrees


Precipitation...

From December 1st through February 28th, Rochester International Airport received 3.59 inches of precipitation.  This was 0.88 inches above the seasonal normal of 2.71 inches.

The table below contains the monthly precipitation totals and their departures from normal for the winter of 2009-10.

          Winter 2009-10 Precipitation
               in Rochester MN

                Precipitation         Departure
   Month            Total            from Normal
   -----        ------------         -----------
 December        2.22 inches        +1.20 inches
 January         0.58 inches        -0.36 inches
 February        0.79 inches        +0.04 inches
 
 Winter          3.59 inches        +0.88 inches


Snowfall...5th Snowiest Winter

From December 1st through February 28th...the snow observer near Rochester International Airport received 44.4 inches of snow.  This was 13.1 inches above the normal of 31.3 inches.  This was the fifth greatest total ever to fall during a meteorological winter.  The table below lists the ten snowiest winters in Rochester MN.

         Snowiest Meteorological Winters
                in Rochester MN
                   1893-2010

                                   Snowfall
     Rank         Winter             Total
     ----         ------         -------------
       1          2000-01         50.0 inches
       2          1969-70         48.1 inches
       3          2008-09         46.4 inches
       4          1996-97         45.8 inches
       5          2009-10         44.4 inches
       6          1995-96         43.9 inches
       7          1978-79         43.6 inches
       8          1993-94         43.1 inches
       9          1970-71         43.0 inches
      10          1981-82         40.6 inches


The table below contains the monthly snowfall totals and their departures from normal for the winter of 2009-10.

           Winter 2009-10 Snowfall
               in Rochester MN

                  Snowfall            Departure
   Month            Total            from Normal
   -----        ------------         -----------
 December        26.3 inches        +11.6inches
 January          4.2 inches        - 7.7 inches
 February        13.9 inches        + 7.8 inches
 
 Winter          44.4 inches        +13.1 inches


Snow Depth - Tied for Greatest Average Snow Depth

The average snow depth was 14 inches.  This tied 1978-79 for the greatest average snow depth during a meteorological winter.  The table below lists the top ten meteorological winters with greatest average snow depth.

       Top Ten Greatest Average Snow Depth
         during a Meteorological Winter
                in Rochester MN

                    Average
        Rank       Snow Depth       Winter
        ----       ----------       ------
          1        14 inches      2009-2010
                   14 inches      1978-1979
          3        12 inches      1985-1986
                   12 inches      1969-1970
          5        10 inches      1996-1997
                   10 inches      1981-1982
                   10 inches      1970-1971
                   10 inches      1968-1969
          9         9 inches      2000-2001
                    9 inches      1983-1984
                    9 inches      1950-1951

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

...THE ROCHESTER CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2009 TO 2/28/2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1886 TO 2010

WEATHER OBSERVED
VALUE DATE(S)

................................
TEMPERATURE (F)
HIGHEST 48 12/01
LOWEST -19 01/02
AVG. MAXIMUM 21.8
AVG. MINIMUM 7.2
MEAN 14.5
DAYS MAX >= 90 0
DAYS MAX <= 32 82
DAYS MIN <= 32 90
DAYS MIN <= 0 29

PRECIPITATION (INCHES)
TOTALS 3.59
DAYS >= .01 28
DAYS >= .10 11
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 2.30 MM

SNOWFALL (INCHES)
TOTALS 44.4
SNOWDEPTH AVG. 14
DAYS >= TRACE 46
DAYS >= 1.0 14
GREATEST
SNOW DEPTH 21
24 HR TOTAL 8.3 MM

DEGREE_DAYS
HEATING TOTAL 4527
COOLING TOTAL 0
.................................

WIND (MPH)
AVERAGE WIND SPEED 11.0
HIGHEST GUST SPEED/DIRECTION 45/340 DATE 12/09

- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED


Return to News Archive

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.