National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Iowa City Municipal Airport (KIOW)

Lat: 41.64°NLon: 91.54°WElev: 650ft.

Fair

63°F

17°C

Humidity 73%
Wind Speed W 12 mph
Barometer 29.59 in (1001.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Jun 1:52 am CDT
Extended Forecast for

Kalona IA

Flood Warning June 18, 02:30am until June 20, 09:00am
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning June 18, 02:30am until June 20, 09:00am

    NOW until 9:00am Sat

    Flood Warning

  • Overnight

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Increasing clouds, with a high near 79. Light northwest wind becoming west 5 to 10 mph in the afternoon.

    High: 79 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Heavy Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 58. West wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 73. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Juneteenth
Increasing clouds, with a high near 79. Light northwest wind becoming west 5 to 10 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Showers likely after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Sunday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 74. Chance of precipitation is 80%.
Sunday Night
A 40 percent chance of showers before 1am. Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kalona IA
 41.49°N 91.7°W (Elev. 699 ft)
Last Update:
2:01 am CDT Jun 18, 2026
Forecast Valid:
2am CDT Jun 18, 2026-6pm CDT Jun 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation