Marshall (IL) monthly weather averages

Average daytime temperature

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

Marshall average temperature chart (Celsius) Marshall average temperature chart (Fahrenheit)
Average monthly temperatures in Marshall (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.2 3.9 10.8 17.9 23.7 28.6 30.3 29 25.7 19.3 11.4 3.9
°F 34.1 39 51.5 64.2 74.6 83.5 86.6 84.1 78.3 66.7 52.4 39.1

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.

Marshall monthly rainfall chart (mm) Marshall monthly rainfall chart (inches)
Average monthly rainfall in Marshall (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 60 58 92 100 110 97 119 91 82 68 90 86
inches 2.4 2.3 3.6 3.9 4.3 3.8 4.7 3.6 3.2 2.7 3.5 3.4
Rainy days 10 9 12 12 11 9 9 8 8 8 10 12

Average annual rainfall in Marshall: 1003.367mm (395 inches)

Average daily sunshine

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

Marshall average daily sunshine chart
Average daily sunshine Marshall
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.1 5.8 6.6 8 9.5 11 10.9 10 8.7 7.4 4.8 4.2

Day / night temperatures

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

Marshall average minimum / maximum temperatures (Celsius) Marshall average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Marshall (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -8.4 -6.2 0.1 6 11.5 16.5 18.6 17.4 13.4 7.1 1.4 -4.8
Max °C 1.4 4.2 11.1 18.2 24 28.9 30.6 29.3 26.1 19.6 11.6 4.2
Min °F 16.9 20.9 32.2 42.8 52.6 61.7 65.5 63.2 56 44.7 34.5 23.5
Max °F 25.7 30.2 42.1 53.8 63.9 72.9 76.3 73.9 67.5 55.9 43.7 31.5

Sea temperature

The graph below shows the average sea temperature.

Marshall average sea temperature chart (Celsius) Marshall average sea temperature chart (Fahrenheit)
Average sea temperature around Marshall in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.9 7.2 7.3 8.6 11.2 15.8 20.8 23.1 21.3 16.6 12.4 9.5
°F 46.2 44.9 45.2 47.5 52.1 60.4 69.5 73.6 70.4 61.8 54.3 49.1

Wind speed

The graph below shows the average wind speed.

Marshall average winspeed by month (km/h) Marshall average winspeed by month (mph)
Average wind speed in Marshall (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 18 19 19 16 14 12 12 13 15 17 18
mph 11 11 12 12 10 9 8 7 8 9 11 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.

Marshall relative humidity averages
Average relative humidity in Marshall
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
74% 73% 70% 65% 67% 67% 71% 73% 73% 70% 74% 77%

Other monthly averages

UV index Best time to go?

Marshall weather stats

Marshall weather statistics
Hottest month: July 30.3°C 86.5°F
Driest month: February 58mm 2.3ins
Sunniest month: July 10.9hrs
Coldest month: January 1.2°C 34.2°F
Wettest month: July 119mm 4.7ins
Warmest sea: August 23.1°C 73.6°F
Map showing location of Marshall (39.39143, -87.69364) Marshall map pin © Google

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