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August / Summer 2026 Climate Summary and Outlook for Sept / Fall

Hazardous Weather Conditions

Current conditions at

Iowa City Municipal Airport (KIOW)

Lat: 41.64°NLon: 91.54°WElev: 650ft.

Partly Cloudy

76°F

24°C

Humidity	94%
Wind Speed	Calm
Barometer	29.92 in (1012.6 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	76°F (24°C)
Last update	5 Sep 4:52 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Riverside IA

Extreme Heat Warning September 5, 05:51am until September 5, 07:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning September 5, 05:51am until September 5, 07:00pm
NOW until 7:00pm Sat
Extreme Heat Warning
Today
High: 93 °F
Patchy Fog
then Sunny
Tonight
Low: 68 °F
Partly Cloudy
Sunday
High: 85 °F
Mostly Sunny
Sunday Night
Low: 64 °F
Mostly Cloudy
Labor Day
High: 84 °F
Mostly Sunny
Monday Night
Low: 67 °F
Partly Cloudy
Tuesday
High: 94 °F
Mostly Sunny
Tuesday Night
Low: 72 °F
Partly Cloudy
then Chance
T-storms

Detailed Forecast

Today

Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 93. Heat index values as high as 107. Light and variable wind becoming northeast 5 to 10 mph in the morning.

Tonight

Partly cloudy, with a low around 68. East wind 5 to 10 mph.

Sunday

Mostly sunny, with a high near 85. East wind 5 to 10 mph.

Sunday Night

Mostly clear during the early evening, then becoming mostly cloudy, with a low around 64. East wind 5 to 10 mph.

Labor Day

Mostly sunny, with a high near 84.

Monday Night

Partly cloudy, with a low around 67.

Tuesday

Mostly sunny, with a high near 94.