Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Iowa City Municipal Airport (KIOW)

Lat: 41.64°NLon: 91.54°WElev: 650ft.

Mostly Cloudy

70°F

21°C

Humidity 79%
Wind Speed W 15 G 29 mph
Barometer 29.89 in (1011.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 18 May 10:52 pm CDT
Extended Forecast for

Iowa City IA

Severe T-storm Watch May 18, 11:05pm until May 19, 04:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch May 18, 11:05pm until May 19, 04:00am

    NOW until 4:00am Tue

    Severe T-storm Watch

  • Tonight

    Low: 61 °F

    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 7am.  Mostly cloudy, with a steady temperature around 65. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 65 °F

    Chance
    T-storms then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65. Northeast wind 5 to 10 mph.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely.  Mostly cloudy, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Tonight
Occasional showers and thunderstorms, mainly before 3am. Low around 61. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a steady temperature around 65. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 45. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 65. Northeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Partly sunny, with a high near 67.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 48.
Friday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 59.
Memorial Day
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Iowa City IA
 41.67°N 91.52°W (Elev. 692 ft)
10:02 pm CDT May 18, 2026
11pm CDT May 18, 2026-6pm CDT May 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database