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

Hazardous Weather Conditions

Current conditions at

Chariton (KCNC)

Lat: 41.03°NLon: 93.37°WElev: 1050ft.

39°F

4°C

Humidity 52%
Wind Speed SW 8 mph
Barometer 30.15 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 19 Apr 7:15 am CDT
Extended Forecast for

Williamson IA

Frost Advisory April 20, 12:00am until April 20, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Today

    Today: Sunny, with a high near 59. Breezy, with a southwest wind 8 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 59 °F

    Sunny and
    Breezy then
    Sunny

  • Tonight

    Tonight: Widespread frost between 4am and 5am. Otherwise, mostly clear, with a low around 33. North wind 6 to 9 mph becoming east southeast after midnight.

    Low: 33 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 66. Southeast wind 7 to 15 mph, with gusts as high as 22 mph.

    High: 66 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. South wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 81. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Windy.

    High: 77 °F

    Windy. Partly
    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 59. Breezy, with a southwest wind 8 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
Widespread frost between 4am and 5am. Otherwise, mostly clear, with a low around 33. North wind 6 to 9 mph becoming east southeast after midnight.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 66. Southeast wind 7 to 15 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 52. South wind 13 to 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 81. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Windy.
Thursday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 49. Breezy. Chance of precipitation is 80%.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williamson IA
 41.08°N 93.26°W
Last Update:
6:43 am CDT Apr 19, 2026
Forecast Valid:
7am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation