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

Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Overcast

70°F

21°C

Humidity 57%
Wind Speed E 10 mph
Barometer 29.93 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 22 May 4:55 pm CDT
Extended Forecast for

Keokuk IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. East wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Increasing clouds, with a low around 57. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming north around 5 mph.

    High: 82 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. East wind around 5 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Increasing clouds, with a low around 57. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming north around 5 mph.
Sunday Night
Mostly clear, with a low around 57.
Memorial Day
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Friday
Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Keokuk IA
 40.41°N 91.39°W (Elev. 650 ft)
Last Update:
1:56 pm CDT May 22, 2026
Forecast Valid:
5pm CDT May 22, 2026-6pm CDT May 29, 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