Wheaton (IL) monthly weather averages

Contents

Average daytime temperature

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

Wheaton average temperature chart (Celsius) Wheaton average temperature chart (Fahrenheit)
Average monthly temperatures in Wheaton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2.2 0.4 7.2 14.6 21.1 26.4 28.5 27.4 23.4 17 8.6 0.7
°F 28.1 32.8 45 58.3 70 79.6 83.2 81.3 74.1 62.6 47.5 33.3

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.

Wheaton monthly rainfall chart (mm) Wheaton monthly rainfall chart (inches)
Average monthly rainfall in Wheaton (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 43 36 70 102 88 102 105 97 93 64 71 66
inches 1.7 1.4 2.7 4 3.5 4 4.1 3.8 3.6 2.5 2.8 2.6
Rainy days 11 9 12 13 11 10 10 9 9 9 11 12

Average annual rainfall in Wheaton: 890.334mm (350.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Wheaton

Wheaton average daily sunshine chart
Average daily sunshine Wheaton
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5 5.5 6.5 7.7 9.6 11 11 9.8 8.1 6.8 4.2 3.9

Day / night temperatures

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

Wheaton average minimum / maximum temperatures (Celsius) Wheaton average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Wheaton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -11.3 -8.9 -2.5 3.3 8.6 14.1 16.9 16 11.7 5.3 -0.7 -7.7
Max °C -2 0.7 7.5 14.9 21.4 26.8 28.8 27.7 23.7 17.3 8.9 0.9
Min °F 11.8 16.1 27.6 37.9 47.5 57.3 62.3 60.7 53.1 41.5 30.8 18.1
Max °F 20.1 24.6 36.5 48.4 59 68.7 73 71.2 63.9 52.3 39.4 25.9

Sea temperature

The graph below shows the average sea temperature.

Wheaton average sea temperature chart (Celsius) Wheaton average sea temperature chart (Fahrenheit)
Average sea temperature around Wheaton in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.7 5 5.1 6 8.1 12.5 18.1 21.2 19.4 14.3 10 7.2
°F 42.2 41.1 41.1 42.8 46.6 54.5 64.6 70.2 66.8 57.7 50.1 45

Wind speed

The graph below shows the average wind speed.

Wheaton average winspeed by month (km/h) Wheaton average winspeed by month (mph)
Average wind speed in Wheaton (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 20 19 21 21 18 16 14 14 15 17 19 19
mph 12 12 13 13 11 10 9 9 9 11 12 12

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.

Wheaton relative humidity averages
Average relative humidity in Wheaton
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 73% 70% 66% 65% 66% 70% 72% 72% 70% 74% 77%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Wheaton weather stats

Wheaton weather statistics
Hottest month: July 28.5°C 83.3°F
Driest month: February 36mm 1.4ins
Sunniest month: July 11hrs
Coldest month: January -2.2°C 28°F
Wettest month: July 105mm 4.1ins
Warmest sea: August 21.2°C 70.2°F
Map showing location of Wheaton (41.86614, -88.10701) Wheaton map pin © Google

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