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

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

70°F

21°C

Humidity 100%
Wind Speed S 7 mph
Barometer 30.05 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 9 Sep 11:55 pm CDT
Extended Forecast for

Keokuk IA

  • Overnight

    Overnight: A 40 percent chance of showers and thunderstorms. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 10am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. Northeast wind around 5 mph.

    High: 80 °F

    Chance
    Showers and
    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Northeast wind around 5 mph becoming calm.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the morning.

    High: 83 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Calm wind.
Thursday
A 30 percent chance of showers, mainly before 10am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. Northeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 61. Northeast wind around 5 mph becoming calm.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 66.
Saturday
A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Partly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Mostly sunny, with a high near 90.
Monday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 67. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 79.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 63.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 80.
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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:
6:56 pm CDT Sep 9, 2026
Forecast Valid:
12am CDT Sep 10, 2026-6pm CDT Sep 16, 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