Waukegan (IL) monthly weather averages

Contents

Average daytime temperature

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

Waukegan average temperature chart (Celsius) Waukegan average temperature chart (Fahrenheit)
Average monthly temperatures in Waukegan (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2.5 -0.1 6 12.9 19.4 25.1 27.4 26.5 22.4 15.9 8 0.4
°F 27.5 31.9 42.9 55.2 66.9 77.1 81.4 79.8 72.4 60.6 46.5 32.8

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.

Waukegan monthly rainfall chart (mm) Waukegan monthly rainfall chart (inches)
Average monthly rainfall in Waukegan (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 42 35 66 94 82 94 99 93 90 63 67 58
inches 1.7 1.4 2.6 3.7 3.2 3.7 3.9 3.7 3.6 2.5 2.6 2.3
Rainy days 12 10 12 13 11 10 10 9 10 10 11 12

Average annual rainfall in Waukegan: 837.7mm (329.8 inches)

Average daily sunshine

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

Waukegan average daily sunshine chart
Average daily sunshine Waukegan
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.9 5.6 6.5 7.7 9.6 11 11 9.8 7.9 6.5 4.2 3.8

Day / night temperatures

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

Waukegan average minimum / maximum temperatures (Celsius) Waukegan average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Waukegan (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -11.5 -9.2 -3.1 2.7 8 13.5 16.9 16.2 11.9 5.7 -0.7 -7.9
Max °C -2.3 0.2 6.3 13.2 19.7 25.4 27.7 26.8 22.7 16.2 8.3 0.7
Min °F 11.3 15.5 26.5 36.8 46.3 56.2 62.4 61.2 53.4 42.2 30.8 17.9
Max °F 19.6 23.9 34.9 46.2 56.8 66.9 72.1 70.7 63.1 51.6 38.8 25.5

Sea temperature

The graph below shows the average sea temperature.

Waukegan average sea temperature chart (Celsius) Waukegan average sea temperature chart (Fahrenheit)
Average sea temperature around Waukegan in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.6 2.8 2.7 3.6 6 12.1 19.3 21.8 19.6 14 8.9 5.3
°F 38.6 37.1 36.8 38.4 42.8 53.8 66.8 71.3 67.3 57.2 48 41.6

Wind speed

The graph below shows the average wind speed.

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

Waukegan relative humidity averages
Average relative humidity in Waukegan
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 72% 71% 67% 66% 68% 71% 73% 73% 71% 74% 77%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Waukegan weather stats

Waukegan weather statistics
Hottest month: July 27.4°C 81.3°F
Driest month: February 35mm 1.4ins
Sunniest month: July 11hrs
Coldest month: January -2.5°C 27.5°F
Wettest month: July 99mm 3.9ins
Warmest sea: August 21.8°C 71.2°F
Map showing location of Waukegan (42.36363, -87.84479) Waukegan map pin © Google

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