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.

Mostly Cloudy

32°F

0°C

Humidity 87%
Wind Speed E 16 G 23 mph
Barometer 29.71 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 15 Mar 1:15 am CDT
Extended Forecast for

Sumner IA

Blizzard Warning March 15, 07:00am until March 16, 07:00am
High Wind Warning March 15, 01:00pm until March 16, 04:00am
Click here for hazard details and duration
Blizzard Warning
High Wind Warning

  • Overnight

    Overnight: A 30 percent chance of rain and thunderstorms, mainly after 4am. Cloudy, with a steady temperature around 36. Windy, with an east southeast wind around 21 mph, with gusts as high as 31 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Chance Rain
    and Windy

  • Sunday

    Sunday: Rain, snow, and sleet, becoming all snow after 3pm. Patchy blowing snow after 2pm. Temperature falling to around 30 by 5pm. Very windy, with an east southeast wind 18 to 23 mph becoming north 31 to 36 mph in the morning. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.

    High: 40 °F⇓

    Rain and
    Windy then
    Wintry Mix
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow. Widespread blowing snow. Low around 7. Wind chill values as low as -10. Very windy, with a north wind 34 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 7 °F

    Snow and
    Blowing Snow

  • Monday

    Monday: A 30 percent chance of snow, mainly before 7am. Areas of blowing snow. Cloudy, then gradually becoming mostly sunny, with a high near 13. Wind chill values as low as -15. Windy, with a northwest wind 26 to 31 mph, with gusts as high as 41 mph. New snow accumulation of less than a half inch possible.

    High: 13 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Patchy blowing snow before 7pm. Partly cloudy, with a low around -1. Windy, with a northwest wind 17 to 22 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.

    Low: -1 °F

    Patchy
    Blowing Snow
    and Windy
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow after 1pm. Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly before 1am. Low around 19. Breezy. Chance of precipitation is 80%.

    Low: 19 °F

    Snow and
    Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of rain and thunderstorms, mainly after 4am. Cloudy, with a steady temperature around 36. Windy, with an east southeast wind around 21 mph, with gusts as high as 31 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Rain, snow, and sleet, becoming all snow after 3pm. Patchy blowing snow after 2pm. Temperature falling to around 30 by 5pm. Very windy, with an east southeast wind 18 to 23 mph becoming north 31 to 36 mph in the morning. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.
Sunday Night
Snow. Widespread blowing snow. Low around 7. Wind chill values as low as -10. Very windy, with a north wind 34 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Monday
A 30 percent chance of snow, mainly before 7am. Areas of blowing snow. Cloudy, then gradually becoming mostly sunny, with a high near 13. Wind chill values as low as -15. Windy, with a northwest wind 26 to 31 mph, with gusts as high as 41 mph. New snow accumulation of less than a half inch possible.
Monday Night
Patchy blowing snow before 7pm. Partly cloudy, with a low around -1. Windy, with a northwest wind 17 to 22 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.
Tuesday
A 20 percent chance of snow after 1pm. Mostly sunny, with a high near 25.
Tuesday Night
Snow, mainly before 1am. Low around 19. Breezy. Chance of precipitation is 80%.
Wednesday
Mostly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sumner IA
 42.83°N 92.1°W
Last Update:
11:31 pm CDT Mar 14, 2026
Forecast Valid:
1am CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
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