National Weather Service United States Department of Commerce

Cold Front Crossing the Central U.S.

A cold front over the Northern Rockies will move eastward to the Upper Mississippi Valley/Central Plains by Monday. Rain will develop along the boundary over the Upper Midwest and move into the Upper Great Lakes by Monday. Some of the thunderstorms could become severe in portions of Texas through Monday.
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Hazardous Weather Conditions

Current Conditions

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Knoxville IA

7 Day Forecast

Des Moines, IA

NWS Weather Forecast Office

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 12 °C

Sunday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 24 °C

Sunday
Night

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

Low: 14 °C

Monday

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

High: 22 °C

Monday
Night

Mostly Clear

Mostly
Clear

Low: 7 °C

Tuesday

Sunny

Sunny

High: 17 °C

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 8 °C

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 17 °C

Wednesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

Low: 12 °C

Detailed Forecast

  • Tonight Mostly cloudy, with a low around 12. South southeast wind 13 to 18 km/h.
  • Sunday A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 24. South wind 16 to 23 km/h, with gusts as high as 29 km/h.
  • Sunday Night Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 14. South wind 13 to 18 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
  • Monday Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 22. Breezy, with a west southwest wind 14 to 19 km/h becoming north northwest 21 to 26 km/h in the afternoon. Winds could gust as high as 37 km/h. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.
  • Monday Night Mostly clear, with a low around 7. North northwest wind 16 to 23 km/h, with gusts as high as 29 km/h.
  • Tuesday Sunny, with a high near 17.
  • Tuesday Night Mostly clear, with a low around 8.
  • Wednesday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 17. Breezy.
  • Wednesday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 12. Breezy.
  • Thursday Showers and thunderstorms likely. Mostly cloudy, with a high near 19. Breezy. Chance of precipitation is 60%.
  • Thursday Night A chance of showers. Mostly cloudy, with a low around 9. Breezy. Chance of precipitation is 30%.
  • Friday Mostly sunny, with a high near 16. Windy.
  • Friday Night Mostly cloudy, with a low around 4. Breezy.
  • Saturday A 30 percent chance of showers. Mostly sunny, with a high near 14.

 

Additional Forecasts and Information

Zone Area Forecast for Marion County, IA