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Climate & Weather Averages in Frankfort, Illinois, USA

Currently: 51 °F. Partly cloudy. (Weather station: Chicago Midway Airport, USA). See more current weather

Annual Weather Averages in Chicago Midway Airport

Chicago Midway Airport is 21 miles from Frankfort, so the actual climate in Frankfort can vary a bit.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Frankfort

High Temp: 85 °F

Low Temp: 20 °F

Mean Temp: 52 °F

Precipitation: 2.92"

Humidity: 66%

Dew Point: 40 °F

Wind: 16 mph

Pressure: 30.04 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Frankfort

High Temp: 33 °F

Low Temp: 20 °F

Mean Temp: 26 °F

Precipitation: 1.75"

Humidity: 74%

Dew Point: 19 °F

Wind: 18 mph

Pressure: 30.12 "Hg

Visibility: 8 mi

February Climate & Weather Averages in Frankfort

High Temp: 36 °F

Low Temp: 22 °F

Mean Temp: 29 °F

Precipitation: 1.76"

Humidity: 70%

Dew Point: 20 °F

Wind: 18 mph

Pressure: 30.12 "Hg

Visibility: 9 mi

March Climate & Weather Averages in Frankfort

High Temp: 47 °F

Low Temp: 31 °F

Mean Temp: 39 °F

Precipitation: 2.14"

Humidity: 65%

Dew Point: 28 °F

Wind: 18 mph

Pressure: 30.10 "Hg

Visibility: 9 mi

April Climate & Weather Averages in Frankfort

High Temp: 59 °F

Low Temp: 41 °F

Mean Temp: 50 °F

Precipitation: 3.49"

Humidity: 60%

Dew Point: 36 °F

Wind: 18 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

May Climate & Weather Averages in Frankfort

High Temp: 71 °F

Low Temp: 51 °F

Mean Temp: 61 °F

Precipitation: 4.00"

Humidity: 62%

Dew Point: 47 °F

Wind: 16 mph

Pressure: 29.98 "Hg

Visibility: 10 mi

June Climate & Weather Averages in Frankfort

High Temp: 81 °F

Low Temp: 62 °F

Mean Temp: 72 °F

Precipitation: 4.09"

Humidity: 63%

Dew Point: 58 °F

Wind: 14 mph

Pressure: 29.93 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Frankfort

High Temp: 85 °F

Low Temp: 68 °F

Mean Temp: 76 °F

Precipitation: 3.47"

Humidity: 63%

Dew Point: 62 °F

Wind: 13 mph

Pressure: 29.96 "Hg

Visibility: 10 mi

August Climate & Weather Averages in Frankfort

High Temp: 83 °F

Low Temp: 67 °F

Mean Temp: 75 °F

Precipitation: 3.94"

Humidity: 66%

Dew Point: 62 °F

Wind: 12 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

September Climate & Weather Averages in Frankfort

High Temp: 76 °F

Low Temp: 59 °F

Mean Temp: 68 °F

Precipitation: 2.73"

Humidity: 63%

Dew Point: 54 °F

Wind: 14 mph

Pressure: 30.02 "Hg

Visibility: 10 mi

October Climate & Weather Averages in Frankfort

High Temp: 63 °F

Low Temp: 47 °F

Mean Temp: 55 °F

Precipitation: 3.50"

Humidity: 64%

Dew Point: 43 °F

Wind: 16 mph

Pressure: 30.04 "Hg

Visibility: 10 mi

November Climate & Weather Averages in Frankfort

High Temp: 49 °F

Low Temp: 35 °F

Mean Temp: 42 °F

Precipitation: 2.25"

Humidity: 67%

Dew Point: 32 °F

Wind: 17 mph

Pressure: 30.10 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Frankfort

High Temp: 38 °F

Low Temp: 25 °F

Mean Temp: 32 °F

Precipitation: 1.98"

Humidity: 73%

Dew Point: 24 °F

Wind: 17 mph

Pressure: 30.10 "Hg

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (76 °F avg)
Coldest MonthJanuary (26 °F avg)
Wettest MonthJune (4.09" avg)
Windiest MonthJanuary (18 mph avg)
Annual precip.35.09" (per year)

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