Winchester (IL) monthly weather averages

Contents

Average daytime temperature

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

Winchester average temperature chart (Celsius) Winchester average temperature chart (Fahrenheit)
Average monthly temperatures in Winchester (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.7 3.3 10.3 17.5 23 27.9 30.1 28.9 25.2 19.1 11.1 3.4
°F 33.3 38 50.5 63.5 73.4 82.2 86.2 83.9 77.3 66.4 52 38.1

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.

Winchester monthly rainfall chart (mm) Winchester monthly rainfall chart (inches)
Average monthly rainfall in Winchester (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 37 41 78 95 112 95 101 83 88 72 71 62
inches 1.5 1.6 3.1 3.7 4.4 3.7 4 3.3 3.5 2.8 2.8 2.4
Rainy days 9 8 11 11 11 9 9 8 8 8 9 10

Average annual rainfall in Winchester: 882.566mm (347.5 inches)

Average daily sunshine

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

Winchester average daily sunshine chart
Average daily sunshine Winchester
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.7 6.1 6.6 8 9.3 10.6 10.8 9.7 8.5 7.3 5.1 4.6

Day / night temperatures

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

Winchester average minimum / maximum temperatures (Celsius) Winchester average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Winchester (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -9.8 -7.8 -1.2 5.6 10.9 16 18.2 16.9 12.5 6.2 0 -6.4
Max °C 1 3.6 10.6 17.8 23.3 28.2 30.4 29.2 25.5 19.4 11.4 3.6
Min °F 14.4 18 29.9 42.1 51.6 60.8 64.8 62.3 54.5 43.2 32 20.5
Max °F 24.1 28.2 40.5 53.1 62.8 71.8 75.7 73.4 66.2 55 42.3 29.5

Sea temperature

The graph below shows the average sea temperature.

Winchester average sea temperature chart (Celsius) Winchester average sea temperature chart (Fahrenheit)
Average sea temperature around Winchester in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.4 9 9.5 10.7 12.8 15.4 18.6 21.8 20.4 16.2 12.9 10.8
°F 49 48.2 49 51.3 55 59.6 65.5 71.3 68.7 61.1 55.3 51.4

Wind speed

The graph below shows the average wind speed.

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

Winchester relative humidity averages
Average relative humidity in Winchester
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 73% 69% 64% 67% 67% 70% 72% 72% 69% 73% 77%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Winchester weather stats

Winchester weather statistics
Hottest month: July 30.1°C 86.2°F
Driest month: January 37mm 1.5ins
Sunniest month: July 10.8hrs
Coldest month: January 0.7°C 33.3°F
Wettest month: May 112mm 4.4ins
Warmest sea: August 21.8°C 71.2°F
Map showing location of Winchester (39.62977, -90.45624) Winchester map pin © Google

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