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Climate & Weather Averages in Washington County State Conservation Area, Illinois, USA

Now
72 °F

Clear.


Feels Like: 70 °F
Forecast: 85 / 69 °F
Wind: 6 mph from South

Location: Southern Illinois Airport

Current Time: May 25, 2019 at 12:56:53 am

Latest Report: May 24, 2019 at 11:52 pm


Visibility: 10 mi

Pressure: 30.03 "Hg

Humidity: 87%

Dew Point: 68 °F

Location of Washington County State Conservation AreaLocation

Annual Weather Averages in Southern Illinois Airport

Southern Illinois Airport is 35 miles from Washington County State Conservation Area, so the actual climate in Washington County State Conservation Area can vary a bit.

Based on weather reports collected during 1985–2015.

All Year Climate & Weather Averages in Washington County State Conservation Area

High Temp: 89 °F

Low Temp: 26 °F

Mean Temp: 57 °F

Precipitation: 1.20"

Humidity: 69%

Dew Point: 47 °F

Wind: 6 mph

Pressure: 30.06 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Washington County State Conservation Area

High Temp: 43 °F

Low Temp: 26 °F

Mean Temp: 34 °F

Precipitation: 0.85"

Humidity: 73%

Dew Point: 26 °F

Wind: 8 mph

Pressure: 30.16 "Hg

Visibility: 9 mi

February Climate & Weather Averages in Washington County State Conservation Area

High Temp: 47 °F

Low Temp: 29 °F

Mean Temp: 38 °F

Precipitation: 0.83"

Humidity: 69%

Dew Point: 28 °F

Wind: 8 mph

Pressure: 30.13 "Hg

Visibility: 9 mi

March Climate & Weather Averages in Washington County State Conservation Area

High Temp: 58 °F

Low Temp: 37 °F

Mean Temp: 47 °F

Precipitation: 1.54"

Humidity: 65%

Dew Point: 36 °F

Wind: 8 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Washington County State Conservation Area

High Temp: 69 °F

Low Temp: 47 °F

Mean Temp: 58 °F

Precipitation: 1.91"

Humidity: 64%

Dew Point: 46 °F

Wind: 8 mph

Pressure: 29.99 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Washington County State Conservation Area

High Temp: 78 °F

Low Temp: 57 °F

Mean Temp: 67 °F

Precipitation: 1.76"

Humidity: 69%

Dew Point: 57 °F

Wind: 6 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

June Climate & Weather Averages in Washington County State Conservation Area

High Temp: 86 °F

Low Temp: 66 °F

Mean Temp: 76 °F

Precipitation: 1.25"

Humidity: 68%

Dew Point: 65 °F

Wind: 5 mph

Pressure: 29.96 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Washington County State Conservation Area

High Temp: 89 °F

Low Temp: 69 °F

Mean Temp: 79 °F

Precipitation: 1.11"

Humidity: 70%

Dew Point: 69 °F

Wind: 5 mph

Pressure: 29.99 "Hg

Visibility: 8 mi

August Climate & Weather Averages in Washington County State Conservation Area

High Temp: 88 °F

Low Temp: 66 °F

Mean Temp: 77 °F

Precipitation: 0.70"

Humidity: 70%

Dew Point: 67 °F

Wind: 4 mph

Pressure: 30.01 "Hg

Visibility: 8 mi

September Climate & Weather Averages in Washington County State Conservation Area

High Temp: 81 °F

Low Temp: 57 °F

Mean Temp: 69 °F

Precipitation: 0.96"

Humidity: 70%

Dew Point: 59 °F

Wind: 4 mph

Pressure: 30.04 "Hg

Visibility: 8 mi

October Climate & Weather Averages in Washington County State Conservation Area

High Temp: 70 °F

Low Temp: 46 °F

Mean Temp: 58 °F

Precipitation: 0.95"

Humidity: 66%

Dew Point: 47 °F

Wind: 6 mph

Pressure: 30.08 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Washington County State Conservation Area

High Temp: 57 °F

Low Temp: 37 °F

Mean Temp: 47 °F

Precipitation: 1.20"

Humidity: 68%

Dew Point: 37 °F

Wind: 7 mph

Pressure: 30.13 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Washington County State Conservation Area

High Temp: 45 °F

Low Temp: 29 °F

Mean Temp: 37 °F

Precipitation: 1.33"

Humidity: 74%

Dew Point: 29 °F

Wind: 7 mph

Pressure: 30.15 "Hg

Visibility: 9 mi

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Quick Climate Info

Hottest MonthJuly (79 °F avg)
Coldest MonthJanuary (34 °F avg)
Wettest MonthApril (1.91" avg)
Windiest MonthMarch (8 mph avg)
Annual Rainfall14.40" (per year)

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