Weather Averages Allendale, IL

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Weather Averages for
Allendale, IL



Latitude: 38°20'N, Longitude: 87°34'W, Elevation: 146.3 m, Distance: 9.71 km

  Unit Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average temperature
over 30 years
°C 12 -1 0 6 12 18 23 25 23 20 13 7 1
Average high temperature
over 30 years
°C 18 2 5 12 18 24 29 30 30 26 20 12 5
Average low temperature
over 30 years
°C 7 -6 -4 1 6 12 17 19 17 14 7 2 -3
Highest recorded temperature
over 98 years
°C 45 23 25 32 32 37 40 45 42 40 35 28 24
Lowest recorded temperature
over 98 years
°C -28 -28 -26 -21 -6 -2 0 7 6 -2 -7 -19 -26
Average number of days above 27°C
over 30 years
days 46 - - - 0.1 1.8 9.4 15 13 5.9 0.3 - -
Average precipitation
over 30 years
cm 116.8 6.3 6.9 11.9 11.4 13.5 10.2 10.7 9.7 7.6 8.4 10.4 9.9
Average number of days below -1.5°C
over 30 years
days 96 24 20 13 3.5 0.1 - - - 0.1 2.4 12 21
Average number of days below -17.5°C
over 30 years
days 3 1.5 0.8 0.1 - - - - - - - - 0.6
Average snowfall
over 30 years
cm 20.1 8.1 11.9 1.8 0.8 - - - - - - 0.8 4.1
Most rain reported in a day
over 101 years
cm 26.7 9.7 14.0 12.4 8.1 11.9 9.9 21.1 26.7 11.7 8.9 10.9 9.7
Most rain reported in a month
over 101 years
cm 164.6 38.4 25.9 37.3 24.9 33.5 28.4 37.1 32.8 29.2 20.8 27.9 22.9
Least rain reported in a month
over 101 years
cm 69.6 - 0.3 0.8 2.0 0.5 1.3 0.5 0.8 0.8 0.3 1.3 1.3
Heating degree days
over 30 years
days 4842 1098 875 625 305 98 8 1 2 49 266 570 945
Cooling degree days
over 30 years
days 1327 - - 3 24 104 276 386 325 174 33 2 -
Most snow reported in a month
over 101 years
cm 135.9 80.5 50.8 48.3 15.2 - - - - - 12.7 22.9 66.0