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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

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

Ottumwa IASimilar City Names

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. South southwest wind around 5 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Calm wind becoming south southeast around 6 mph in the evening.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 87. South wind 8 to 14 mph, with gusts as high as 26 mph.

    High: 87 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74. South wind 9 to 11 mph, with gusts as high as 24 mph.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 92. South southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 92 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. South southwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 67. Calm wind becoming south southeast around 6 mph in the evening.
Saturday
Mostly cloudy, with a high near 87. South wind 8 to 14 mph, with gusts as high as 26 mph.
Saturday Night
Partly cloudy, with a low around 74. South wind 9 to 11 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 92. South southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 77.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 76.
Wednesday
Mostly sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ottumwa IASimilar City Names
 41.02°N 92.42°W
Last Update:
2:21 pm CDT Aug 28, 2026
Forecast Valid:
4pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation