Public Information Statement
Issued by NWS La Crosse, WI

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NOUS43 KARX 011615
PNSARX

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1015 AM CST FRI DEC 1 2017

...Meteorological Autumn in La Crosse WI and Rochester MN...

The information below provides details on autumn temperatures,
precipitation and snowfall for La Crosse WI and Rochester MN.

La Crosse WI...

Autumn of 2017 was the very warm (8th warmest) and slightly drier-
than-normal at La Crosse, WI.  More details can be found below.

Temperatures...8th Warmest Autumn

From September 1 through November 30 2017, La Crosse Regional
Airport had an average temperature of 53.2 degrees.  This was 3.6
degrees warmer than the 1981-2010 normal of 49.6 degrees.  This made
it the 8th warmest autumn and it was also the third consecutive year
that the autumn was among the 8 warmest.  2015 was the third warmest
and 2016 was the warmest.  Temperature records date back to October
15 1872.  The table below lists the top ten warmest autumns in La
Crosse WI.

              Warmest Autumns
              in La Crosse WI
                 1873-2017

                  Average
      Rank      Temperature     Year
      ----      -----------     ----
        1       56.7 degrees    2016
        2       55.6 degrees    1931
        3       55.1 degrees    2015
        4       55.0 degrees    1963
        5       54.4 degrees    1998
        6       54.2 degrees    1994
        7       53.4 degrees    1922
        8       53.2 degrees    2017
        9       53.0 degrees    1953
                53.0 degrees    1948

The table below contains the monthly average temperatures and their
departures from normal for the autumn of 2017.

           Autumn 2017 Temperatures
               in La Crosse WI

                  Average            Departure
   Month        Temperature         from Normal
   -----        -----------         -----------
   September   68.8 degrees        +6.0 degrees -  2nd Warmest
   October     54.1 degrees        +3.9 degrees
   November    36.6 degrees        +0.6 degrees

   Autumn      53.2 degrees        +3.6 degrees - 8th Warmest

The average high temperature was 62.6 degrees which was 3.6 degrees
warmer than 1981-2010 normal of 59.0 degrees.  This was the 12th
warmest.

The average low temperature was 43.8 degrees which was 3.5 degrees
warmer than 1981-2010 normal of 40.3 degrees.  This was the 14th
warmest.

The warmest high temperature was 95 degrees on September 22nd.
The coldest high temperature was 31 degrees on November 10th.

The warmest low temperature was 72 degrees on September 22nd.
The coldest low temperature was 12 degrees on November 10th.


Precipitation

From September 1 through November 30 2017, La Crosse Regional
Airport received 7.31 inches of precipitation.  This was 0.43 inches
drier than the 1981-2010 normal of 7.74 inches.  The table below
contains the monthly precipitation totals and their departures from
normal for the autumn of 2017.

          Autumn 2017 Precipitation
               in La Crosse WI

                Precipitation         Departure
   Month            Total            from Normal
   -----        ------------         -----------
   September    0.95 inches         -2.61 inches
   October      6.01 inches         +3.84 inches - 4th Wettest
   November     0.35 inches         -1.66 inches

   Autumn       7.31 inches         -0.43 inches

The highest daily precipitation total was 1.56 inches on
October 6th.

No precipitation fell on 46 days (50.5%).
A trace of precipitation fell on 16 days (17.6%).
Measurable precipitation fell on 29 days (31.9%).


Snowfall

From September 1 through November 30 2017, La Crosse Regional
Airport received only a trace of snow.  This was 4.3 inches below
their 1981-2010 normal of 4.3 inches. This tied 1904, 1913, 1941,
1969, 1973, 1987, 2001, 2010, and 2016 for the second least in an
autumn.  The only autumn that saw less (no snow) was 1949.  The
table below lists the top ten snowless autumns in La Crosse WI.

              Snowless Autumns
              in La Crosse WI
                 1873-2017

                   Snow
      Rank         Total        Year
      ----         -----        ----
        1       0.0 inches      1949
        2          Trace        2017
                   Trace        2016
                   Trace        2010
                   Trace        2001
                   Trace        1987
                   Trace        1973
                   Trace        1969
                   Trace        1941
                   Trace        1913
                   Trace        1904

The table below contains the monthly snowfall totals and their
departures from normal for the autumn of 2017.

            Autumn 2017 Snowfall
               in La Crosse WI

                  Snowfall            Departure
   Month            Total            from Normal
   -----        ------------         -----------
   September     0.0 inches           0.0 inches
   October         Trace             -0.2 inches
   November        Trace             -4.1 inches

   Autumn          Trace             -4.3 inches

The highest daily snowfall total was a trace on October 27,
October 30 to November 1, November 3, November 9, and November 22.


Rochester MN...

Autumn of 2017 was warmer and slightly wetter at Rochester MN.  More
details can be found below.

Temperatures...

From September 1 through November 30 2017, Rochester International
Airport had an average temperature of 48.9 degrees.  This was 1.2
degrees warmer than the 1981-2010 normal of 47.7 degrees.  The table
below contains the monthly average temperatures and their departures
from normal for the autumn of 2017.

           Autumn 2017 Temperatures
               in Rochester MN

                  Average            Departure
   Month        Temperature         from Normal
   -----        -----------         -----------
   September   64.1 degrees        +3.2 degrees - 11th warmest
   October     49.6 degrees        +1.2 degrees
   November    32.9 degrees        -0.9 degrees

   Autumn      48.9 degrees        +1.2 degrees

The average high temperature was 58.6 degrees which was 1.5 degrees
warmer than 1981-2010 normal of 57.1 degrees.

The average low temperature was 39.2 degrees which was 0.9 degrees
warmer than 1981-2010 normal of 38.3 degrees.

The warmest high temperature was 91 degrees on September 22nd.
The coldest high temperature was 28 degrees on November 10th.

The warmest low temperature was 71 degrees on September 22nd.
The coldest low temperature was 9 degrees on November 10th.


Precipitation

From September 1 through November 30 2017, Rochester International
Airport received 7.68 inches of precipitation.  This was 0.08 inches
wetter than the 1981-2010 normal 7.60 inches.  The table below
contains the monthly precipitation totals and their departures from
normal for the autumn of 2017.

          Autumn 2017 Precipitation
               in Rochester MN

                Precipitation         Departure
   Month            Total            from Normal
   -----        ------------         -----------
   September    2.17 inches         -1.28 inches
   October      5.09 inches         +2.85 inches
   November     0.42 inches         -1.49 inches

   Autumn       7.68 inches         +0.08 inches

The highest daily precipitation total was 1.44 inches on October 6th.

No precipitation fell on 46 days (50.5%).
A trace of precipitation fell on 15 days (16.5%).
Measurable precipitation fell on 30 days (33.0%).


Snowfall...

From September 1 through November 30 2017, Rochester International
Airport received just 3.3 inches of snow.  This was 3.6 inches lower
than their 1981-2010 normal of 6.9 inches. The table below contains
the monthly snowfall totals and their departures from normal for the
autumn of 2017.

            Autumn 2017 Snowfall
               in Rochester MN

                  Snowfall            Departure
   Month            Total            from Normal
   -----        ------------         -----------
   September     0.0 inches           0.0 inches
   October       2.6 inches          +1.8 inches  - 8th snowiest
   November      0.7 inches          -5.4 inches

   Autumn        3.3 inches          -3.6 inches

The highest daily snowfall total was 2.6 inches on October 27th.
This was the 8th greatest snowfall in an October.

$$

Boyne


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