Iowa City (IA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Iowa City.
Climate overview of Iowa City
Iowa City, Iowa, United States of America, sees big temperature differences between seasons, with July peaking at 29°C (84°F) and January dropping to -1°C (30°F).
Rain/snowfall is high, totalling around 1005 mm (40 in) per year. June is the wettest month and January the driest. The city also experiences a distinct dry season from January to February.
Iowa City Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Iowa City — and find the best time to visit.
Monthly Temperature in Iowa City
Visitors to Iowa City can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in July, the warmest time of the year, to a very cold -1°C (30°F) during cooler months like January.
At night, you can expect temperatures ranging from 18°C (64°F) in July to around -11°C (12°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Iowa City
Iowa City is known for its substantial rain/snowfall, with annual precipitation reaching 1005 mm (40 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives heavy rainfall, averaging 160 mm (6.3 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month January brings less snowfall, with 24 mm (0.9 in) over 7 snowy days. For more details, please visit our Iowa City Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Iowa City
The weather does bring rainfall during this period, between 81 mm (3.2 in) and 120 mm (4.7 in).
Plan accordingly for June, when conditions bring the heaviest precipitation. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
Frequently asked questions about the climate in Iowa City
What is the best time to visit Iowa City?
September typically offers the most optimal weather in Iowa City. In contrast, January, February, March, November and December tend to have less optimal conditions. Iowa City has a distinct dry season from January to February.
What temperatures can I expect in Iowa City?
Daytime highs range from -1°C (30°F) in January to 29°C (84°F) in July. Nighttime lows range from -11°C (12°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Iowa City get?
Annual rainfall is around 1005 mm (40 in). June is the wettest month with 160 mm (6.3 in), while January is the driest with 24 mm (0.9 in).
Iowa City 3-Day Forecast
Iowa City (IA) 3-Day Forecast
Iowa City on the map
Iowa City is highlighted — select any city to see its climate.
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