Downers Grove (IL) monthly weather averages

Contents

Average daytime temperature

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

Downers Grove average temperature chart (Celsius) Downers Grove average temperature chart (Fahrenheit)
Average monthly temperatures in Downers Grove (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2 0.6 7.5 14.9 21.3 26.7 28.6 27.4 23.6 17.2 8.8 0.9
°F 28.4 33.1 45.4 58.8 70.4 80.1 83.5 81.4 74.5 63 47.8 33.6

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.

Downers Grove monthly rainfall chart (mm) Downers Grove monthly rainfall chart (inches)
Average monthly rainfall in Downers Grove (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 42 36 69 101 91 103 105 96 92 65 71 65
inches 1.7 1.4 2.7 4 3.6 4.1 4.1 3.8 3.6 2.5 2.8 2.5
Rainy days 11 9 12 12 11 10 10 9 9 9 11 12

Average annual rainfall in Downers Grove: 889.267mm (350.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Downers Grove

Downers Grove average daily sunshine chart
Average daily sunshine Downers Grove
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5 5.5 6.5 7.7 9.6 11.1 11 9.8 8.2 6.8 4.3 3.9

Day / night temperatures

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

Downers Grove average minimum / maximum temperatures (Celsius) Downers Grove average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Downers Grove (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -11.2 -8.9 -2.3 3.5 8.8 14.2 16.9 15.9 11.7 5.3 -0.6 -7.5
Max °C -1.8 0.9 7.7 15.2 21.7 27 28.9 27.7 23.9 17.5 9 1.1
Min °F 11.8 16.1 27.9 38.2 47.8 57.6 62.4 60.6 53.1 41.5 30.9 18.5
Max °F 20.3 24.8 36.9 48.7 59.4 69.1 73.2 71.2 64 52.5 39.6 26.2

Sea temperature

The graph below shows the average sea temperature.

Downers Grove average sea temperature chart (Celsius) Downers Grove average sea temperature chart (Fahrenheit)
Average sea temperature around Downers Grove 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.

Downers Grove average winspeed by month (km/h) Downers Grove average winspeed by month (mph)
Average wind speed in Downers Grove (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 18 19
mph 12 12 13 13 11 10 9 9 9 11 11 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.

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

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Downers Grove weather stats

Downers Grove weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: February 36mm 1.4ins
Sunniest month: July 11hrs
Coldest month: January -2°C 28.4°F
Wettest month: July 105mm 4.1ins
Warmest sea: August 21.2°C 70.2°F
Map showing location of Downers Grove (41.80892, -88.01117) Downers Grove map pin © Google

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