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

Hazardous Weather Conditions

Current conditions at

Oelwein Municipal Airport (KOLZ)

Lat: 42.68°NLon: 91.98°WElev: 1070ft.

Overcast

68°F

20°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.91 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Jun 4:15 am CDT
Extended Forecast for

3 Miles W Sumner IA

Heat Advisory June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Showers and thunderstorms likely. Cloudy, with a steady temperature around 69. South southwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    T-storms
    Likely

  • Friday

    Friday: Showers and thunderstorms, mainly before 10am. Some of the storms could produce heavy rainfall. High near 89. Breezy, with a south wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 89 °F

    Breezy. Heavy
    Rain then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Windy, with a south wind 17 to 21 mph, with gusts as high as 31 mph.

    Low: 76 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny, with a high near 93. Heat index values as high as 104. Windy, with a south southwest wind 22 to 26 mph, with gusts as high as 36 mph.

    High: 93 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear
    and Windy

  • Sunday

    Sunday: Sunny, with a high near 93. Windy.

    High: 93 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 74. Windy.

    Low: 74 °F

    Mostly Clear
    and Windy
    then Chance
    Showers and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

Detailed Forecast

Overnight
Showers and thunderstorms likely. Cloudy, with a steady temperature around 69. South southwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms, mainly before 10am. Some of the storms could produce heavy rainfall. High near 89. Breezy, with a south wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
Mostly clear, with a low around 76. Windy, with a south wind 17 to 21 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 93. Heat index values as high as 104. Windy, with a south southwest wind 22 to 26 mph, with gusts as high as 36 mph.
Saturday Night
Mostly clear, with a low around 76. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 30 mph.
Sunday
Sunny, with a high near 93. Windy.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 74. Windy.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Tuesday
Showers, with thunderstorms also possible after 1pm. High near 81. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Sumner IA
 42.85°N 92.16°W
Last Update:
3:34 am CDT Jun 20, 2025
Forecast Valid:
4am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation