See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
25°
Overcast
Feels Like: 16°
Min: 18°
Max: 25°
The next few hours will be humid and overcast, with today reaching 25°C and dropping to 17°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:52
Sunrise
19:08
Sunset
Moon
Waxing Crescent
11:48
Moonrise
20:39
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
Upgrade to access real-time air quality data for Iowa City.
UV Index
Humidity
Weather in Iowa City today, September 15, 2026
Iowa City looks cloudy on September 15, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward.
The temperature range runs from about 18°C up to 25°C. Expect humidity between 81% and 86%, most humid near 16:00. A lighter breeze peaks around 20:00 near 4.1 km/h.
Expect persistent cloud later on, with amounts around 100% by 15:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 16.0 km on average, though it can drop toward 15.5 km in thicker cloud or showers. Daylight runs from 06:52 to 19:08, lasting 12 hours 15 minutes of sunlight today.
In short, cloud leads the story in Iowa City on September 15, 2026; expect limited sun and a peak around 25°C.
Frequently asked questions about weather in Iowa City
How warm does it get in Iowa City?
The warmest month in Iowa City is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.
How cold does it get in Iowa City?
The coldest month in Iowa City is January, with average low temperatures of -9°C. The average temperature during this period is around -5°C.
What is the wettest time of year in Iowa City?
The wettest month in Iowa City is May, with an average of 122mm of precipitation.
What is the driest time of year in Iowa City?
The driest month in Iowa City is February, with an average of 44mm of precipitation.
