Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Oelwein Municipal Airport (KOLZ)

Lat: 42.68°NLon: 91.98°WElev: 1070ft.

Fair

61°F

16°C

Humidity 94%
Wind Speed NW 5 mph
Barometer 30.03 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 27 Aug 12:15 am CDT
Extended Forecast for

Sumner IA

  • Overnight

    Overnight: Mostly clear, with a low around 59. Northwest wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. North northwest wind 5 to 8 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Light south wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 18 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 80. Breezy.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 68. Windy.

    Low: 68 °F

    Slight Chance
    T-storms and
    Windy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88. Breezy.

    High: 88 °F

    Slight Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 71. Breezy.

    Low: 71 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Overnight
Mostly clear, with a low around 59. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 79. North northwest wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 80. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 64. Light south wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Breezy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Windy.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. Breezy.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy.
Monday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Sumner IA
 42.85°N 92.1°W
10:36 pm CDT Aug 26, 2026
12am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

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