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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

Keokuk Municipal Airport (KEOK)

Lat: 40.46°NLon: 91.43°WElev: 676ft.

Fair

46°F

8°C

Humidity 93%
Wind Speed N 6 mph
Barometer 30.26 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 20 May 6:35 am CDT
Extended Forecast for

3 Miles ENE Williamstown MO

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 67. Northeast wind 6 to 8 mph.

    High: 67 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Northeast wind 3 to 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 70. East wind 7 to 9 mph.

    High: 70 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly after 1am. Cloudy, with a low around 52. East wind around 8 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. High near 65. East wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 65 °F

    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 67. Northeast wind 6 to 8 mph.
Tonight
Partly cloudy, with a low around 47. Northeast wind 3 to 6 mph.
Thursday
Mostly cloudy, with a high near 70. East wind 7 to 9 mph.
Thursday Night
A 50 percent chance of showers, mainly after 1am. Cloudy, with a low around 52. East wind around 8 mph, with gusts as high as 20 mph.
Friday
Showers, with thunderstorms also possible after 1pm. High near 65. East wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Friday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 54.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 58.
Memorial Day
Partly sunny, with a high near 83.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Williamstown MO
 40.22°N 91.8°W (Elev. 650 ft)
Last Update:
5:01 am CDT May 20, 2026
Forecast Valid:
6am CDT May 20, 2026-6pm CDT May 26, 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