Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Overcast

68°F

20°C

Humidity 90%
Wind Speed S 8 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 24 Jul 10:53 pm CDT
Extended Forecast for

4 Miles SW Millersburg IA

Extreme Heat Watch July 26, 12:00pm until July 27, 10:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • Tonight

    Tonight: A slight chance of showers between midnight and 1am.  Mostly cloudy, with a steady temperature around 69. South wind around 5 mph.  Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 90. Southwest wind around 5 mph.

    High: 90 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 71. Calm wind becoming southwest around 5 mph after midnight.

    Low: 71 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Heat index values as high as 105. Southwest wind 5 to 10 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers between midnight and 1am. Mostly cloudy, with a steady temperature around 69. South wind around 5 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 90. Southwest wind around 5 mph.
Saturday Night
Increasing clouds, with a low around 71. Calm wind becoming southwest around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 71.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Millersburg IA
 41.52°N 92.2°W (Elev. 774 ft)
9:16 pm CDT Jul 24, 2026
11pm CDT Jul 24, 2026-6pm CDT Jul 31, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database