Glendale Heights (IL) monthly weather averages

Average daytime temperature

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

Glendale Heights average temperature chart (Celsius) Glendale Heights average temperature chart (Fahrenheit)
Average monthly temperatures in Glendale Heights (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.

Glendale Heights monthly rainfall chart (mm) Glendale Heights monthly rainfall chart (inches)
Average monthly rainfall in Glendale Heights (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 Glendale Heights: 890.334mm (350.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Glendale Heights

Glendale Heights average daily sunshine chart
Average daily sunshine Glendale Heights
  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.

Glendale Heights average minimum / maximum temperatures (Celsius) Glendale Heights average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Glendale Heights (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.

Glendale Heights average sea temperature chart (Celsius) Glendale Heights average sea temperature chart (Fahrenheit)
Average sea temperature around Glendale Heights 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.

Glendale Heights average winspeed by month (km/h) Glendale Heights average winspeed by month (mph)
Average wind speed in Glendale Heights (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.

Glendale Heights relative humidity averages
Average relative humidity in Glendale Heights
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?

Glendale Heights weather stats

Glendale Heights 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 Glendale Heights (41.91031, -88.07174) Glendale Heights map pin © Google

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