Normal (IL) monthly weather averages

Contents

Average daytime temperature

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

Normal average temperature chart (Celsius) Normal average temperature chart (Fahrenheit)
Average monthly temperatures in Normal (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.1 1.5 8.7 16.6 22.9 28.3 29.8 28.5 25.1 18.4 9.8 1.6
°F 30 34.6 47.7 61.9 73.2 82.9 85.7 83.3 77.2 65.1 49.6 34.9

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.

Normal monthly rainfall chart (mm) Normal monthly rainfall chart (inches)
Average monthly rainfall in Normal (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 43 41 74 97 100 98 108 84 88 69 72 63
inches 1.7 1.6 2.9 3.8 3.9 3.8 4.3 3.3 3.5 2.7 2.8 2.5
Rainy days 10 9 12 12 11 9 9 9 9 9 10 11

Average annual rainfall in Normal: 890.166mm (350.5 inches)

Average daily sunshine

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

Normal average daily sunshine chart
Average daily sunshine Normal
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.3 5.9 6.5 7.9 9.5 11 10.8 9.8 8.5 7.2 4.7 4.2

Day / night temperatures

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

Normal average minimum / maximum temperatures (Celsius) Normal average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Normal (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -10.5 -8.3 -1.8 4.3 10 15.2 17.5 16 12 5.5 -0.4 -7
Max °C -0.9 1.7 9 16.9 23.2 28.6 30.2 28.8 25.5 18.7 10 1.8
Min °F 13.1 17.1 28.9 39.7 50 59.4 63.4 60.8 53.5 41.9 31.3 19.4
Max °F 21.7 26.1 38.5 51.1 61.9 71.4 74.8 72.3 65.7 53.8 40.6 27.3

Sea temperature

The graph below shows the average sea temperature.

Normal average sea temperature chart (Celsius) Normal average sea temperature chart (Fahrenheit)
Average sea temperature around Normal in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.4 6.8 6.9 8 10.2 13.9 18.6 21.7 20 15.2 11.4 8.8
°F 45.2 44.2 44.5 46.4 50.3 57.1 65.5 71 68 59.4 52.5 47.9

Wind speed

The graph below shows the average wind speed.

Normal average winspeed by month (km/h) Normal average winspeed by month (mph)
Average wind speed in Normal (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 21 21 17 16 13 13 14 16 18 19
mph 12 12 13 13 11 10 8 8 9 10 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.

Normal relative humidity averages
Average relative humidity in Normal
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
74% 74% 71% 65% 66% 67% 71% 74% 73% 70% 74% 78%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Normal weather stats

Normal weather statistics
Hottest month: July 29.8°C 85.6°F
Driest month: February 41mm 1.6ins
Sunniest month: July 10.8hrs
Coldest month: January -1.1°C 30°F
Wettest month: July 108mm 4.3ins
Warmest sea: August 21.7°C 71.1°F
Map showing location of Normal (40.5142, -88.99063) Normal map pin © Google

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