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

Hazardous Weather Conditions

Current conditions at

Iowa City Municipal Airport (KIOW)

Lat: 41.64°NLon: 91.54°WElev: 650ft.

Fog/Mist

72°F

22°C

Humidity 97%
Wind Speed NE 3 mph
Barometer 29.87 in (1011.0 mb)
Dewpoint 71°F (22°C)
Visibility 6.00 mi
Last update 13 Aug 2:52 am CDT
Extended Forecast for

Tiffin IA

Flood Watch August 13, 07:00pm until August 14, 01:00pm
Dense Fog Advisory until August 13, 09:00am
Click here for hazard details and duration
Flood Watch
Dense Fog Advisory
  •  
    Dense Fog Advisory until August 13, 09:00am

    NOW until 9:00am Thu

    Dense Fog Advisory

  • Overnight

    Low: 71 °F

    Patchy Fog

  • Thursday

    Thursday: Occasional showers and thunderstorms, mainly before 2pm. Patchy fog before 9am. High near 80. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 80 °F

    T-storms and
    Patchy Fog
    then T-storms
    Likely

  • Thursday Night

    Thursday Night: Occasional showers and thunderstorms, mainly after 11pm. Low around 67. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Low: 67 °F

    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 82. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 86. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 83.

    High: 83 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 71. East wind around 5 mph.
Thursday
Occasional showers and thunderstorms, mainly before 2pm. Patchy fog before 9am. High near 80. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Occasional showers and thunderstorms, mainly after 11pm. Low around 67. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 82. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 86. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
Sunday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 83.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tiffin IA
 41.71°N 91.67°W (Elev. 787 ft)
Last Update:
2:41 am CDT Aug 13, 2026
Forecast Valid:
2am CDT Aug 13, 2026-6pm CDT Aug 19, 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