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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Cedar Rapids Airport (KCID)

Lat: 41.88°NLon: 91.72°WElev: 840ft.

Rain Fog/Mist

67°F

19°C

Humidity 93%
Wind Speed SE 14 G 25 mph
Barometer 29.98 in (1014.6 mb)
Dewpoint 65°F (18°C)
Visibility 2.00 mi
Last update 19 Sep 9:52 am CDT
Extended Forecast for

Marion IA

Flood Watch September 19, 10:56am until September 20, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 19, 10:56am until September 20, 07:00am

    NOW until 7:00am Sun

    Flood Watch

  • Today

    High: 80 °F

    Heavy Rain

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 68. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 56. Northeast wind 10 to 15 mph.

    Low: 56 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. South wind around 10 mph.
Tonight
Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 50 percent chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 68. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 50 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 56. Northeast wind 10 to 15 mph.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 51.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IA
 42.02°N 91.6°W (Elev. 856 ft)
Last Update:
10:36 am CDT Sep 19, 2026
Forecast Valid:
10am CDT Sep 19, 2026-6pm CDT Sep 25, 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