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

Hazardous Weather Conditions

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Fair

74°F

23°C

Humidity 33%
Wind Speed W 12 mph
Barometer 29.72 in (1005.8 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 16 Jun 5:53 pm CDT
Extended Forecast for

4 Miles ENE Martinsburg IA

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 57. Northwest wind 5 to 15 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 2pm. High near 85. Breezy, with a southeast wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 85 °F

    T-storms then
    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 57. Northwest wind 5 to 15 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Wednesday
Showers and thunderstorms, mainly before 2pm. High near 85. Breezy, with a southeast wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Mostly clear, with a low around 59. West wind around 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 76. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 54.
Juneteenth
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Martinsburg IA
 41.2°N 92.18°W (Elev. 801 ft)
Last Update:
5:07 pm CDT Jun 16, 2026
Forecast Valid:
6pm CDT Jun 16, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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