Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Partly Cloudy

64°F

18°C

Humidity 60%
Wind Speed Calm
Barometer 29.96 in (1014.1 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 27 May 12:53 am CDT
Extended Forecast for

4 Miles S Martinsburg IA

  • Overnight

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

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. North northeast wind 5 to 7 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. East wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 59. Calm wind.
Wednesday
Sunny, with a high near 89. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 61. North northeast wind 5 to 7 mph.
Thursday
Sunny, with a high near 87. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 59. East wind 7 to 11 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Martinsburg IA
 41.13°N 92.27°W
1:11 am CDT May 27, 2026
1am CDT May 27, 2026-6pm CDT Jun 2, 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