Vandalia (IL) monthly weather averages

Contents

Average daytime temperature

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

Vandalia average temperature chart (Celsius) Vandalia average temperature chart (Fahrenheit)
Average monthly temperatures in Vandalia (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.2 5 11.8 18.7 24 28.9 30.9 29.7 26.2 19.9 12.1 4.8
°F 36 41 53.2 65.7 75.2 84 87.5 85.4 79.1 67.9 53.8 40.7

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.

Vandalia monthly rainfall chart (mm) Vandalia monthly rainfall chart (inches)
Average monthly rainfall in Vandalia (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 48 51 92 102 100 96 97 67 87 66 85 85
inches 1.9 2 3.6 4 3.9 3.8 3.8 2.6 3.4 2.6 3.3 3.3
Rainy days 9 9 12 11 10 9 9 8 8 8 10 11

Average annual rainfall in Vandalia: 924.934mm (364.1 inches)

Average daily sunshine

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

Vandalia average daily sunshine chart
Average daily sunshine Vandalia
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.5 5.9 6.7 8.1 9.6 10.9 11 10 8.8 7.5 5.1 4.5

Day / night temperatures

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

Vandalia average minimum / maximum temperatures (Celsius) Vandalia average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Vandalia (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.7 -5.5 0.6 6.6 11.7 16.6 18.9 17.5 13.5 7.2 1.7 -4.5
Max °C 2.5 5.3 12.1 19 24.3 29.2 31.2 30 26.5 20.3 12.4 5.1
Min °F 18.2 22.2 33 43.9 53.1 61.9 65.9 63.4 56.3 44.9 35 24
Max °F 27.3 31.8 43.3 55 64.4 73.2 77 74.7 68 56.7 44.6 32.5

Sea temperature

The graph below shows the average sea temperature.

Vandalia average sea temperature chart (Celsius) Vandalia average sea temperature chart (Fahrenheit)
Average sea temperature around Vandalia in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10 9.5 9.9 11.3 13.6 16.5 19.9 22.8 21.3 17 13.7 11.4
°F 50 49.1 49.9 52.4 56.5 61.8 67.9 73.1 70.4 62.6 56.6 52.6

Wind speed

The graph below shows the average wind speed.

Vandalia average winspeed by month (km/h) Vandalia average winspeed by month (mph)
Average wind speed in Vandalia (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 18 20 19 16 15 13 13 13 15 17 18
mph 12 11 13 12 10 9 8 8 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.

Vandalia relative humidity averages
Average relative humidity in Vandalia
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 73% 69% 65% 67% 67% 70% 72% 72% 69% 73% 76%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Vandalia weather stats

Vandalia weather statistics
Hottest month: July 30.9°C 87.6°F
Driest month: January 48mm 1.9ins
Sunniest month: July 11hrs
Coldest month: January 2.2°C 36°F
Wettest month: April 102mm 4ins
Warmest sea: August 22.8°C 73°F
Map showing location of Vandalia (38.9606, -89.09368) Vandalia map pin © Google

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