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

Oelwein Municipal Airport (KOLZ)

Lat: 42.68°NLon: 91.98°WElev: 1070ft.

Fair

72°F

22°C

Humidity 65%
Wind Speed NE 7 mph
Barometer 30.00 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Jun 7:55 pm CDT
Extended Forecast for

Sumner IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. East wind 3 to 7 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 75. East southeast wind 8 to 11 mph.

    High: 75 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. East wind 6 to 10 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79. East southeast wind 8 to 15 mph, with gusts as high as 21 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Southeast wind 13 to 15 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A slight chance of thunderstorms before 7am. Partly sunny, with a high near 88. Windy. Chance of precipitation is 10%.

    High: 88 °F

    Windy. Slight
    Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. Breezy.

    Low: 75 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 91. Windy.

    High: 91 °F

    Mostly Sunny
    and Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. Windy.

    Low: 75 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. East wind 3 to 7 mph.
Friday
Partly sunny, with a high near 75. East southeast wind 8 to 11 mph.
Friday Night
Mostly clear, with a low around 56. East wind 6 to 10 mph.
Saturday
Mostly sunny, with a high near 79. East southeast wind 8 to 15 mph, with gusts as high as 21 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Southeast wind 13 to 15 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of thunderstorms before 7am. Partly sunny, with a high near 88. Windy. Chance of precipitation is 10%.
Sunday Night
Mostly clear, with a low around 75. Breezy.
Monday
Mostly sunny, with a high near 91. Windy.
Monday Night
Partly cloudy, with a low around 75. Windy.
Tuesday
Mostly sunny, with a high near 92. Breezy.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Breezy.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sumner IA
 42.85°N 92.1°W
Last Update:
7:52 pm CDT Jun 25, 2026
Forecast Valid:
8pm CDT Jun 25, 2026-6pm CDT Jul 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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