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

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Partly Cloudy

45°F

7°C

Humidity 40%
Wind Speed E 6 mph
Barometer 30.35 in (1028.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 23 Mar 7:53 pm CDT
Extended Forecast for

Chillicothe IA

  • Tonight

    Tonight: Isolated sprinkles between 9pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South southeast wind around 6 mph.

    Low: 36 °F

    Isolated
    Sprinkles

  • Tuesday

    Tuesday: A slight chance of sprinkles after 5pm. Partly sunny, with a high near 63. South wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 63 °F

    Slight Chance
    Sprinkles

  • Tuesday Night

    Tuesday Night: A slight chance of sprinkles before 8pm. Partly cloudy, with a low around 46. South southeast wind around 8 mph.

    Low: 46 °F

    Slight Chance
    Sprinkles

  • Wednesday

    Wednesday: Partly sunny, with a high near 78. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 78 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 81. Breezy.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 35. Windy.

    Low: 35 °F

    Chance Rain
    and Windy

  • Friday

    Friday: Mostly sunny, with a high near 51. Breezy.

    High: 51 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated sprinkles between 9pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South southeast wind around 6 mph.
Tuesday
A slight chance of sprinkles after 5pm. Partly sunny, with a high near 63. South wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of sprinkles before 8pm. Partly cloudy, with a low around 46. South southeast wind around 8 mph.
Wednesday
Partly sunny, with a high near 78. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 56. South wind around 6 mph.
Thursday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 81. Breezy.
Thursday Night
A 30 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 35. Windy.
Friday
Mostly sunny, with a high near 51. Breezy.
Friday Night
Mostly clear, with a low around 28.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IA
 41.09°N 92.53°W
Last Update:
6:11 pm CDT Mar 23, 2026
Forecast Valid:
8pm CDT Mar 23, 2026-6pm CDT Mar 30, 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