Caledonia, Minnesota

... Autumn 2009 was warmer and wetter than normal in Rochester MN...

Autumn temperatures averaged 3.6 degree above normal and the
precipitation was 1.97 inches above normal at Rochester
international Airport. However this was not the total story because
there was quite variability in the monthly temperatures...
precipitation... and snowfall.

Temperatures...

From September 1 through November 30 2009... Rochester international
Airport had an average temperature of 49.3 degrees. This was
3.6 degrees above the normal of 45.7 degrees. This tied 1944 and
1973 for the 14th warmest autumn. The warmest autumn occurred back
in 1963 when the average temperature was 52.7 degrees. The Table
below contains the twenty warmest autumns.

               Warmest autumns
               in Rochester MN
                  1886-2009

                  average
    rank temperature year
    ---- ----------- ----
      1 52.7 degrees 1963
      2 50.7 degrees 2007
                50.7 degrees 2005
      4 50.6 degrees 1953
      5 50.4 degrees 1914
      6 50.1 degrees 1998
      7 50.0 degrees 2001
                50.0 degrees 1994
                50.0 degrees 1971
     10 50.0 degrees 1948
     11 49.8 degrees 2004
     12 49.4 degrees 1941
                49.4 degrees 1913
     14 49.3 degrees 2009
                49.3 degrees 1973
                49.3 degrees 1944
     17 49.1 degrees 1958
                49.1 degrees 1947
                49.1 degrees 1934
     20 48.9 degrees 2008
                48.9 degrees 1975

The Table below contains the monthly precipitation totals and
their departures from normal for the autumn of 2009.

           Autumn 2009 temperatures
               in Rochester MN

                  average departure
   month temperature from normal
   ----- ----------- -----------
   September 62.6 degrees +3.7 degrees
   October 42.5 degrees +4.5 degrees - 8th coldest
   November 42.8 degrees +11.6 degrees - 2nd warmest

Precipitation...

From September 1 through November 30 2009... Rochester international
Airport received 9.30 inches of precipitation. This was 1.97 inches
above the normal 7.33 inches.

The Table below contains the monthly precipitation totals and
their departures from normal for the autumn of 2009.

          Autumn 2009 precipitation
               in Rochester MN

                precipitation departure
   month total from normal
   ----- ------------ -----------
   September 1.28 inches -1.84 inches - 19th driest
   October 7.57 inches +5.37 inches - 2nd wettest
   November 0.45 inches -1.56 inches - 19th driest

   autumn 9.30 inches +1.97 inches

Snowfall...

From September 1 through November 30 2009... Rochester international
Airport received 8.1 inches of snow. This was normal.

The Table below contains the monthly snowfall totals and their departures
from normal for the autumn of 2009.

            Autumn 2009 snowfall
               in Rochester MN

                  snowfall departure
   month total from normal
   ----- ------------ -----------
   September 0.0 inches 0.0 inches
   October 7.9 inches +6.9 inches - snowiest
   November 0.2 inches -6.9 inches - 8th least

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

... The Rochester climate summary for the season, from
9/1/2009 to 11/30/2009...

Climate normal period 1971 to 2000
climate record period 1886 to 2009

Weather observed
                 value date(s)

... ... ... ... ... ... ... ... ... ... ..
temperature (f)
highest 82 09/18
                        09/15
lowest 23 11/27
                        10/11
avg. Maximum 58.5
avg. Minimum 40.2
mean 49.3
days Max >= 90 0
days Max <= 32 0
days min <= 32 28
days min <= 0 0

Precipitation (inches)
totals 9.30
days >= .01 27
days >= .10 19
days >= .50 6
days >= 1.00 4
greatest
24 hr. Total 1.58 mm

Snowfall (inches)
totals 8.1
snowdepth avg. 0
days >= trace 11
days >= 1.0 2
greatest
snow depth 1
24 hr total 4.2 mm

Degree_days
heating total 1443
cooling total 33
... ... ... ... ... ... ... ... ... ... ...

Wind (mph)
average wind speed 8.9
highest gust speed/direction 48/290 date 09/28



- indicates negative numbers.
R indicates record was set or tied.
Mm indicates data is missing.
T indicates trace amount.