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Hazardous Weather Conditions

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Fair

77°F

25°C

Humidity 96%
Wind Speed Calm
Barometer 30.12 in (1019.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 29 Jul 1:53 am CDT
Extended Forecast for

Blakesburg IA

Heat Advisory July 29, 12:00pm until July 29, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 74. South wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 95. Heat index values as high as 110. Southeast wind around 6 mph becoming west in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 7pm. Increasing clouds, with a low around 71. Northeast wind 3 to 6 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a steady temperature around 75. East northeast wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    High: 75 °F

    Showers
    Likely then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 63. Northeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 inches possible.

    Low: 63 °F

    T-storms
    Likely

  • Thursday

    Thursday: A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 76. Chance of precipitation is 10%.

    High: 76 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 74. South wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Sunny, with a high near 95. Heat index values as high as 110. Southeast wind around 6 mph becoming west in the afternoon.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 7pm. Increasing clouds, with a low around 71. Northeast wind 3 to 6 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a steady temperature around 75. East northeast wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 63. Northeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 inches possible.
Thursday
A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 76. Chance of precipitation is 10%.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 61.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Blakesburg IA
 40.96°N 92.65°W
Last Update:
1:49 am CDT Jul 29, 2025
Forecast Valid:
2am CDT Jul 29, 2025-6pm CDT Aug 4, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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