Climate and monthly weather forecast
Iowa City, IA

Golden and brown trees in a scenic, neat lawn near the mighty grandeur of the Old Capitol building, Iowa City
Golden and brown trees in a scenic, neat lawn near the mighty grandeur of the Old Capitol building, Iowa City

Weather in January

January, like December, is another subzero cold winter month in Iowa City, Iowa, with an average temperature ranging between min 15.3°F (-9.3°C) and max 27.3°F (-2.6°C). The coldest month is January, with an average high-temperature of 27.3°F (-2.6°C) and an average low-temperature of 15.3°F (-9.3°C). Weather in January »

Weather in February

The last month of the winter, February, is a wintry month in Iowa City, Iowa, with temperature in the range of an average high of 32°F (0°C) and an average low of 19°F (-7.2°C). In Iowa City, the average high-temperature in February is relatively the same as in January - a wintry 32°F (0°C). Weather in February »

Weather in March

March, the first month of the spring in Iowa City, is a frosty month, with an average temperature fluctuating between 46.6°F (8.1°C) and 31.6°F (-0.2°C). In Iowa City, the average high-temperature in March increases considerably from a wintry 32°F (0°C) in February to a chilly 46.6°F (8.1°C). Weather in March »

Weather in April

April in Iowa City, Iowa, is a mild spring month, with an average temperature ranging between min 42.3°F (5.7°C) and max 58.6°F (14.8°C). In April, the average high-temperature rises from a frosty 46.6°F (8.1°C) in March to a mild 58.6°F (14.8°C). Weather in April »

Weather in May

May, the last month of the spring in Iowa City, is a pleasant month, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 69.8°F (21°C). In May, the average high-temperature rises from a mild 58.6°F (14.8°C) in April to an agreeable 69.8°F (21°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Iowa City, Iowa, with an average temperature varying between 62.1°F (16.7°C) and 79.2°F (26.2°C). In Iowa City, the average high-temperature in June increases from a pleasant 69.8°F (21°C) in May to a moderately hot 79.2°F (26.2°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Iowa City, Iowa, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 64.6°F (18.1°C). July is the warmest month, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.6°F (18.1°C). The average heat index in July is estimated at a hot 87.8°F (31°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Iowa City, Iowa, with an average temperature ranging between max 80.6°F (27°C) and min 62.2°F (16.8°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 80.6°F (27°C). Weather in August »

Weather in September

September, the first month of the autumn in Iowa City, is still a warm month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 75.2°F (24°C). In Iowa City, the average high-temperature in September slightly decreases from a moderately hot 80.6°F (27°C) in August to a still warm 75.2°F (24°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Iowa City, Iowa, with an average temperature fluctuating between 60.4°F (15.8°C) and 45°F (7.2°C). In Iowa City, the average high-temperature in October plummets from a moderately hot 75.2°F (24°C) in September to a moderate 60.4°F (15.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Iowa City, Iowa, with an average temperature fluctuating between 32.5°F (0.3°C) and 46.4°F (8°C). In November, the average high-temperature drops from a moderate 60.4°F (15.8°C) in October to a frosty 46.4°F (8°C). Weather in November »

Weather in December

December, the first month of the winter in Iowa City, is still a cold month, with temperature in the range of an average low of 22.8°F (-5.1°C) and an average high of 34°F (1.1°C). In Iowa City, the average high-temperature in December decreases from a frosty 46.4°F (8°C) in November to a cold 34°F (1.1°C). Weather in December »
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FAQ

What is the coldest month in Iowa City?

With an average high-temperature of 27.3°F (-2.6°C) and an average low-temperature of 15.3°F (-9.3°C), January is the coldest month in Iowa City.

What is the most humid month in Iowa City?

January and July, with an average relative humidity of 83%, are most humid months in Iowa City.

What is the driest month in Iowa City?

January and February are months with the least rain when the rain falls for 5.7 days and typically aggregates up to 1.34" (34mm) of rain.

How much does it rain in Iowa City?

Throughout the year, in Iowa City, Iowa, there are 140.4 rainfall days, and 29.57" (751mm) of precipitation is accumulated.

When does it snow in Iowa City?

Months with snowfall in Iowa City, Iowa, are January through April, October through December.

When does it snow the most in Iowa City?

January is the month with the most snowfall. Snow falls for 10.9 days and accumulates 5.28" (134mm) of snow.

How much does it snow in Iowa City?

Throughout the year, in Iowa City, there are 37.7 snowfall days, and 16.42" (417mm) of snow is accumulated.

What is the month with the least sunshine in Iowa City?

January has the least sunshine of the year in Iowa City, with an average of 4.2h of sunshine.

What is the month with the lowest UV index in Iowa City?

January is the month with the lowest UV index in Iowa City, Iowa, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Iowa City?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Iowa City, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the wettest month in Iowa City?

May is the month with the most rainfall. Rain falls for 18.4 days and accumulates 4.69" (119mm) of precipitation.

When it does not snow in Iowa City?

In Iowa City, snow does not fall in May through September.

When are the longest days in Iowa City?

June has the longest days of the year in Iowa City, Iowa, with an average of 15h and 9min of daylight.

What are the months with the highest UV index in Iowa City?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Iowa City?

July is the warmest month, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.6°F (18.1°C).

What month has the most sunshine in Iowa City?

The month with the most sunshine in Iowa City is July, with an average of 10h of sunshine.

What is the least humid month in Iowa City?

The least humid month in Iowa City is October, with an average relative humidity of 72%.

What is the month with the shortest days in Iowa City?

December has the shortest days of the year in Iowa City, Iowa, with an average of 9h and 13min of daylight.

Average temperature
Iowa City, IA

Average temperature - Iowa City, IA

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.3°F).

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure
Iowa City, IA

Average pressure - Iowa City, IA

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed
Iowa City, IA

Average wind speed - Iowa City, IA

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity
Iowa City, IA

Average humidity - Iowa City, IA

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall
Iowa City, IA

Average rainfall - Iowa City, IA

The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and February (1.34").

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Average rainfall days
Iowa City, IA

Average rainfall days - Iowa City, IA

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5 days).

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Average snowfall
Iowa City, IA

Average snowfall - Iowa City, IA

The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Iowa City, IA

Average snowfall days - Iowa City, IA

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Iowa City, IA

Average daylight / Average sunshine - Iowa City, IA

The month with the longest days is June (Average daylight: 15h and 9min).
The month with the shortest days is December (Average daylight: 9h and 13min).

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days
Iowa City, IA

Average sunshine days - Iowa City, IA

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).

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Average visibility
Iowa City, IA

Average visibility - Iowa City, IA

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

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