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.

Overcast

42°F

6°C

Humidity 76%
Wind Speed NE 7 mph
Barometer 30.17 in (1022.0 mb)
Dewpoint 35°F (2°C)
Visibility 9.00 mi
Wind Chill38°F (3°C)
Last update 4 Mar 12:53 am CST
Extended Forecast for

Delta IA

  • Overnight

    Overnight: A slight chance of rain between 3am and 4am. Mostly cloudy, with a low around 34. Northeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A slight chance of rain before noon, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 50. East wind around 5 mph. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 39. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 39 °F

    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 62. North wind around 5 mph becoming south in the morning.

    High: 62 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.

    Low: 47 °F

    Partly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain and possibly a thunderstorm before noon, then rain likely between noon and 3pm, then rain likely and possibly a thunderstorm after 3pm. High near 73. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 36. Chance of precipitation is 80%.

    Low: 36 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

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

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of rain between 3am and 4am. Mostly cloudy, with a low around 34. Northeast wind around 5 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of rain before noon, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 50. East wind around 5 mph. Chance of precipitation is 20%.
Wednesday Night
Rain likely, mainly before 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 39. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 62. North wind around 5 mph becoming south in the morning.
Thursday Night
Rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
Rain and possibly a thunderstorm before noon, then rain likely between noon and 3pm, then rain likely and possibly a thunderstorm after 3pm. High near 73. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm. Low around 36. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 73.
Monday Night
A 30 percent chance of rain and thunderstorms. Mostly clear, with a low around 51.
Tuesday
Rain likely. Partly sunny, with a high near 67. Breezy. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Delta IA
 41.33°N 92.32°W (Elev. 840 ft)
Last Update:
12:26 am CST Mar 4, 2026
Forecast Valid:
1am CST Mar 4, 2026-6pm CDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation