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Climate & Weather Averages in Iowa City, Iowa, USA

Currently: 46 °F. Passing clouds. (Weather station: Iowa City Municipal Airport, USA). See more current weather

Annual Weather Averages in Iowa City

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Iowa City

High Temp: 85 °F

Low Temp: 15 °F

Mean Temp: 51 °F

Precipitation: 2.96"

Humidity: 72%

Dew Point: 41 °F

Wind: 13 mph

Pressure: 30.04 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Iowa City

High Temp: 31 °F

Low Temp: 15 °F

Mean Temp: 23 °F

Precipitation: 1.00"

Humidity: 78%

Dew Point: 16 °F

Wind: 15 mph

Pressure: 30.14 "Hg

Visibility: 8 mi

February Climate & Weather Averages in Iowa City

High Temp: 35 °F

Low Temp: 18 °F

Mean Temp: 26 °F

Precipitation: 1.34"

Humidity: 76%

Dew Point: 19 °F

Wind: 15 mph

Pressure: 30.13 "Hg

Visibility: 8 mi

March Climate & Weather Averages in Iowa City

High Temp: 49 °F

Low Temp: 29 °F

Mean Temp: 39 °F

Precipitation: 2.12"

Humidity: 68%

Dew Point: 28 °F

Wind: 16 mph

Pressure: 30.10 "Hg

Visibility: 9 mi

April Climate & Weather Averages in Iowa City

High Temp: 62 °F

Low Temp: 39 °F

Mean Temp: 51 °F

Precipitation: 3.69"

Humidity: 63%

Dew Point: 37 °F

Wind: 16 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

May Climate & Weather Averages in Iowa City

High Temp: 73 °F

Low Temp: 51 °F

Mean Temp: 62 °F

Precipitation: 4.57"

Humidity: 67%

Dew Point: 50 °F

Wind: 14 mph

Pressure: 29.97 "Hg

Visibility: 9 mi

June Climate & Weather Averages in Iowa City

High Temp: 82 °F

Low Temp: 62 °F

Mean Temp: 72 °F

Precipitation: 5.17"

Humidity: 70%

Dew Point: 61 °F

Wind: 12 mph

Pressure: 29.93 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Iowa City

High Temp: 85 °F

Low Temp: 65 °F

Mean Temp: 75 °F

Precipitation: 4.05"

Humidity: 74%

Dew Point: 66 °F

Wind: 10 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

August Climate & Weather Averages in Iowa City

High Temp: 83 °F

Low Temp: 63 °F

Mean Temp: 73 °F

Precipitation: 3.97"

Humidity: 75%

Dew Point: 64 °F

Wind: 9 mph

Pressure: 30.01 "Hg

Visibility: 9 mi

September Climate & Weather Averages in Iowa City

High Temp: 77 °F

Low Temp: 54 °F

Mean Temp: 65 °F

Precipitation: 3.28"

Humidity: 71%

Dew Point: 55 °F

Wind: 10 mph

Pressure: 30.04 "Hg

Visibility: 9 mi

October Climate & Weather Averages in Iowa City

High Temp: 64 °F

Low Temp: 42 °F

Mean Temp: 53 °F

Precipitation: 2.92"

Humidity: 69%

Dew Point: 42 °F

Wind: 13 mph

Pressure: 30.05 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Iowa City

High Temp: 49 °F

Low Temp: 30 °F

Mean Temp: 39 °F

Precipitation: 2.02"

Humidity: 72%

Dew Point: 30 °F

Wind: 14 mph

Pressure: 30.10 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Iowa City

High Temp: 36 °F

Low Temp: 20 °F

Mean Temp: 28 °F

Precipitation: 1.41"

Humidity: 79%

Dew Point: 22 °F

Wind: 14 mph

Pressure: 30.11 "Hg

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (75 °F avg)
Coldest MonthJanuary (23 °F avg)
Wettest MonthJune (5.17" avg)
Windiest MonthApril (16 mph avg)
Annual precip.35.53" (per year)

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