Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Chillicothe IA

  • Overnight

    Overnight: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. Light north wind.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. South southeast wind 3 to 8 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers after 1am.  Mostly clear, with a low around 65. South southeast wind around 6 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 83. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly cloudy, with a high near 82.

    High: 82 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am.  Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 64. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. Light north wind.
Thursday Night
Mostly clear, with a low around 59. Calm wind.
Friday
Sunny, with a high near 83. South southeast wind 3 to 8 mph.
Friday Night
A 40 percent chance of showers after 1am. Mostly clear, with a low around 65. South southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Sunday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 82.
Sunday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 68.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 89. Breezy. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 62. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 75.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 60.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IA
 41.09°N 92.53°W
10:47 pm CDT Sep 9, 2026
12am CDT Sep 10, 2026-6pm CDT Sep 16, 2026
 
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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