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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Oelwein Municipal Airport (KOLZ)

Lat: 42.68°NLon: 91.98°WElev: 1070ft.

Fair

57°F

14°C

Humidity 100%
Wind Speed E 6 mph
Barometer 30.03 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Aug 4:55 am CDT
Extended Forecast for

Tripoli IA

  • Today

    Today: Sunny, with a high near 79. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South wind around 8 mph.

    Low: 64 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 80. Southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. North northwest wind 5 to 9 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. North northwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South wind around 8 mph.
Friday
Sunny, with a high near 80. Southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 61. North northwest wind 5 to 9 mph.
Saturday
Sunny, with a high near 76. North northwest wind 6 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Partly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tripoli IA
 42.83°N 92.28°W
Last Update:
3:17 am CDT Aug 20, 2026
Forecast Valid:
5am CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

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