Coralville (IA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Coralville.
Climate overview of Coralville
Temperatures in Coralville, Iowa, United States of America, vary greatly throughout the year. July is the hottest month at 29°C (84°F), while January is the coldest at -1°C (30°F).
Coralville sees a moderate amount of rain/snowfall, totalling around 990 mm (39 in) per year. It experiences a distinct dry season from January to February, with warm summers and very cold winters, creating some seasonal variation.
Coralville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Coralville - and find the best time to visit.
Monthly Temperature in Coralville
The climate in Coralville is known for significant temperature differences throughout the year, making the weather dynamic. 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 Coralville
Generally, Coralville receives mid-range precipitation levels, with 990 mm (39 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 158 mm (6.2 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 Coralville 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 Coralville
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: July and August
- Wettest months: April, May, June, July and August, when rainfall is highest.
- Seasonal pattern: A distinct dry season from January to February, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Coralville
What is the best time to visit Coralville?
September typically offers the most optimal weather in Coralville. In contrast, January, February, March, November and December tend to have less optimal conditions. Coralville has a distinct dry season from January to February, with warm summers and very cold winters.
What temperatures can I expect in Coralville?
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 Coralville get?
Annual rainfall is around 990 mm (39 in). June is the wettest month with 158 mm (6.2 in), while January is the driest with 24 mm (0.9 in).
Coralville 3-Day Forecast
Coralville (IA) 3-Day Forecast
Coralville on the map
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