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Climate & Weather Averages in Plainfield, Illinois, USA

Currently: 5 °F. Clear. (Weather station: Lewis University Airport, USA). See more current weather

Annual Weather Averages Near Plainfield

Averages are for Lewis University Airport, which is 7 miles from Plainfield.

Based on weather reports collected during 2005–2015.

All Year Climate & Weather Averages in Plainfield

High Temp: 84 °F

Low Temp: 17 °F

Mean Temp: 51 °F

Precipitation: 2.19"

Humidity: 71%

Dew Point: 40 °F

Wind: 9 mph

Pressure: N/A

Visibility: 9 mi

January Climate & Weather Averages in Plainfield

High Temp: 32 °F

Low Temp: 17 °F

Mean Temp: 24 °F

Precipitation: 1.57"

Humidity: 78%

Dew Point: 18 °F

Wind: 11 mph

Pressure: N/A

Visibility: 8 mi

February Climate & Weather Averages in Plainfield

High Temp: 32 °F

Low Temp: 17 °F

Mean Temp: 25 °F

Precipitation: 1.09"

Humidity: 75%

Dew Point: 17 °F

Wind: 11 mph

Pressure: N/A

Visibility: 8 mi

March Climate & Weather Averages in Plainfield

High Temp: 49 °F

Low Temp: 31 °F

Mean Temp: 40 °F

Precipitation: 1.38"

Humidity: 69%

Dew Point: 29 °F

Wind: 11 mph

Pressure: N/A

Visibility: 9 mi

April Climate & Weather Averages in Plainfield

High Temp: 62 °F

Low Temp: 40 °F

Mean Temp: 51 °F

Precipitation: 2.86"

Humidity: 62%

Dew Point: 37 °F

Wind: 12 mph

Pressure: N/A

Visibility: 9 mi

May Climate & Weather Averages in Plainfield

High Temp: 74 °F

Low Temp: 51 °F

Mean Temp: 62 °F

Precipitation: 3.10"

Humidity: 64%

Dew Point: 48 °F

Wind: 10 mph

Pressure: N/A

Visibility: 9 mi

June Climate & Weather Averages in Plainfield

High Temp: 81 °F

Low Temp: 60 °F

Mean Temp: 71 °F

Precipitation: 3.12"

Humidity: 68%

Dew Point: 58 °F

Wind: 8 mph

Pressure: N/A

Visibility: 9 mi

July Climate & Weather Averages in Plainfield

High Temp: 84 °F

Low Temp: 64 °F

Mean Temp: 74 °F

Precipitation: 3.17"

Humidity: 69%

Dew Point: 62 °F

Wind: 7 mph

Pressure: N/A

Visibility: 9 mi

August Climate & Weather Averages in Plainfield

High Temp: 82 °F

Low Temp: 62 °F

Mean Temp: 72 °F

Precipitation: 3.18"

Humidity: 73%

Dew Point: 62 °F

Wind: 6 mph

Pressure: N/A

Visibility: 9 mi

September Climate & Weather Averages in Plainfield

High Temp: 76 °F

Low Temp: 54 °F

Mean Temp: 65 °F

Precipitation: 1.69"

Humidity: 70%

Dew Point: 54 °F

Wind: 7 mph

Pressure: N/A

Visibility: 9 mi

October Climate & Weather Averages in Plainfield

High Temp: 63 °F

Low Temp: 43 °F

Mean Temp: 53 °F

Precipitation: 1.80"

Humidity: 68%

Dew Point: 42 °F

Wind: 9 mph

Pressure: N/A

Visibility: 9 mi

November Climate & Weather Averages in Plainfield

High Temp: 50 °F

Low Temp: 32 °F

Mean Temp: 41 °F

Precipitation: 1.22"

Humidity: 72%

Dew Point: 32 °F

Wind: 10 mph

Pressure: N/A

Visibility: 9 mi

December Climate & Weather Averages in Plainfield

High Temp: 37 °F

Low Temp: 23 °F

Mean Temp: 30 °F

Precipitation: 2.13"

Humidity: 81%

Dew Point: 25 °F

Wind: 10 mph

Pressure: N/A

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (74 °F avg)
Coldest MonthJanuary (24 °F avg)
Wettest MonthAugust (3.18" avg)
Windiest MonthApril (12 mph avg)
Annual precip.26.29" (per year)

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