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.

Fog/Mist

43°F

6°C

Humidity 86%
Wind Speed E 3 mph
Barometer 29.99 in (1016.1 mb)
Dewpoint 39°F (4°C)
Visibility 6.00 mi
Last update 4 Mar 8:53 pm CST
Extended Forecast for

4 Miles SSE Martinsburg IA

  • Tonight

    Tonight: A chance of rain, with thunderstorms also possible after midnight. Patchy fog. Otherwise, cloudy, with a low around 41. Light and variable wind becoming east around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A slight chance of rain before 8am, then a chance of sprinkles between 8am and 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 60. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 60 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 46. Southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Rain and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. High near 73. Breezy, with a south wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Breezy. Rain
    then Chance
    T-storms

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before midnight, then rain likely. Low around 38. Breezy, with a south wind around 16 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Breezy. Rain
    then Rain
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 64. Breezy.

    High: 64 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, with thunderstorms also possible after midnight. Patchy fog. Otherwise, cloudy, with a low around 41. Light and variable wind becoming east around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of rain before 8am, then a chance of sprinkles between 8am and 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 60. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 46. Southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Rain and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. High near 73. Breezy, with a south wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Rain and possibly a thunderstorm before midnight, then rain likely. Low around 38. Breezy, with a south wind around 16 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 64. Breezy.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 73. Breezy.
Monday Night
A 30 percent chance of rain. Partly cloudy, with a low around 51.
Tuesday
Rain likely. Mostly cloudy, with a high near 66. Breezy. Chance of precipitation is 70%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 30. Blustery. Chance of precipitation is 60%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 43. Breezy. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Martinsburg IA
 41.11°N 92.24°W
Last Update:
8:17 pm CST Mar 4, 2026
Forecast Valid:
9pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation