Marion (IL) monthly weather averages

Contents

Average daytime temperature

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

Marion average temperature chart (Celsius) Marion average temperature chart (Fahrenheit)
Average monthly temperatures in Marion (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.2 6.9 13.4 19.8 24.9 29.8 31.7 30.7 27 20.9 13.5 6.6
°F 39.6 44.4 56.1 67.6 76.9 85.6 89.1 87.2 80.6 69.7 56.3 43.8

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.

Marion monthly rainfall chart (mm) Marion monthly rainfall chart (inches)
Average monthly rainfall in Marion (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 72 78 124 110 124 96 100 88 81 75 104 102
inches 2.8 3.1 4.9 4.3 4.9 3.8 4 3.5 3.2 3 4.1 4
Rainy days 9 9 12 11 10 9 9 8 8 8 10 10

Average annual rainfall in Marion: 1103.633mm (434.5 inches)

Average daily sunshine

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

Marion average daily sunshine chart
Average daily sunshine Marion
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.3 5.8 6.8 8.3 9.5 10.9 11 10.2 8.7 7.6 5.2 4.6

Day / night temperatures

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

Marion average minimum / maximum temperatures (Celsius) Marion average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Marion (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -6.1 -4 2 7.6 12.4 17.1 19.4 18 14.1 7.4 2.5 -3.2
Max °C 4.5 7.2 13.7 20.1 25.3 30.1 32.1 31 27.3 21.3 13.8 6.8
Min °F 21.1 24.9 35.5 45.6 54.2 62.8 66.8 64.4 57.4 45.2 36.4 26.2
Max °F 30.6 34.9 46 56.8 65.8 74.5 78.3 76.1 69.3 57.7 46.6 35.2

Sea temperature

The graph below shows the average sea temperature.

Marion average sea temperature chart (Celsius) Marion average sea temperature chart (Fahrenheit)
Average sea temperature around Marion in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.6 10.1 10.5 12 14.6 18.1 21.7 24 22.5 18.2 14.6 12.2
°F 51.2 50.1 50.9 53.6 58.3 64.7 71.1 75.2 72.4 64.8 58.4 54

Wind speed

The graph below shows the average wind speed.

Marion average winspeed by month (km/h) Marion average winspeed by month (mph)
Average wind speed in Marion (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 17 18 18 15 14 12 12 12 14 16 17
mph 11 11 11 11 9 9 8 7 8 9 10 11

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.

Marion relative humidity averages
Average relative humidity in Marion
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 71% 67% 64% 67% 68% 70% 72% 72% 68% 71% 74%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Marion weather stats

Marion weather statistics
Hottest month: July 31.7°C 89.1°F
Driest month: January 72mm 2.8ins
Sunniest month: July 11hrs
Coldest month: January 4.2°C 39.6°F
Wettest month: March 124mm 4.9ins
Warmest sea: August 24°C 75.2°F
Map showing location of Marion (37.73061, -88.93313) Marion map pin © Google

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