Sun Prairie (WI) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Sun Prairie

Sun Prairie average temperature chart (Celsius) Sun Prairie average temperature chart (Fahrenheit)
Average monthly temperatures in Sun Prairie (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -4.4 -1.7 5 13.3 20.1 25.4 27.9 26.1 21.5 15.3 6.3 -1.7
°F 24 29 41 55.9 68.2 77.8 82.2 79 70.8 59.5 43.4 29

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Sun Prairie monthly rainfall chart (mm) Sun Prairie monthly rainfall chart (inches)
Average monthly rainfall in Sun Prairie (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 28 28 55 79 80 99 101 103 93 62 55 41
inches 1.1 1.1 2.2 3.1 3.1 3.9 4 4 3.6 2.4 2.2 1.6
Rainy days 11 8 11 12 12 10 10 10 10 9 10 10

Average annual rainfall in Sun Prairie: 776.5mm (305.7 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Sun Prairie

Sun Prairie average daily sunshine chart
Average daily sunshine Sun Prairie
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.2 6.1 6.6 7.5 9.2 10.5 10.6 9.4 7.7 6.1 4.2 4

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Sun Prairie average minimum / maximum temperatures (Celsius) Sun Prairie average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Sun Prairie (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -14.4 -12.2 -5.3 1.2 7 12.3 15.2 13.6 9 3.3 -3.2 -10.8
Max °C -4.2 -1.4 5.3 13.6 20.5 25.8 28.2 26.4 21.9 15.6 6.6 -1.5
Min °F 6.1 10 22.6 34.2 44.5 54.1 59.4 56.5 48.1 37.9 26.3 12.7
Max °F 15.3 19.8 32 45.3 56.7 66.2 71.1 68 59.7 48.9 35.1 21

Sea temperature

The graph below shows the average sea temperature.

Sun Prairie average sea temperature chart (Celsius) Sun Prairie average sea temperature chart (Fahrenheit)
Average sea temperature around Sun Prairie in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.2 4.7 4.6 5.3 6.8 9.8 14.7 19.1 17.4 12.4 8.8 6.5
°F 41.3 40.4 40.4 41.5 44.2 49.6 58.5 66.4 63.3 54.3 47.8 43.6

Wind speed

The graph below shows the average wind speed.

Sun Prairie average winspeed by month (km/h) Sun Prairie average winspeed by month (mph)
Average wind speed in Sun Prairie (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 17 19 19 17 16 14 13 14 17 18 17
mph 11 11 12 12 11 10 9 8 9 10 11 11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Sun Prairie relative humidity averages
Average relative humidity in Sun Prairie
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
75% 73% 71% 66% 66% 68% 71% 74% 77% 73% 77% 78%

Other monthly averages

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Sun Prairie weather stats

Sun Prairie weather statistics
Hottest month: July 27.9°C 82.2°F
Driest month: January 28mm 1.1ins
Sunniest month: July 10.6hrs
Coldest month: January -4.4°C 24.1°F
Wettest month: August 103mm 4.1ins
Warmest sea: August 19.1°C 66.4°F
Map showing location of Sun Prairie (43.1836, -89.21373) Sun Prairie map pin © Google

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