National Weather Service United States Department of Commerce

Severe weather expected for Upper Midwest on Wednesday

A potent storm system will bring a chance of severe thunderstorms to parts of the Upper Midwest on Wednesday and Wednesday night. Very large hail, damaging wind gusts, tornadoes and heavy rain are possible with these storms.
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Hazardous Weather Conditions

Current Conditions

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Denison IA

7 Day Forecast

For More Weather Information:

Des Moines, IA Local Forecast Office

Overnight

Partly Cloudy

Partly
Cloudy

Low: 64 °F

Wednesday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 85 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 74 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 84 °F

Thursday
Night

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

Low: 58 °F

Friday

Partly Sunny

Partly
Sunny

High: 69 °F

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 50 °F

Saturday

Mostly Sunny

Mostly
Sunny

High: 70 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 49 °F

Detailed Forecast

  • Overnight Partly cloudy, with a steady temperature around 64. South southeast wind around 8 mph.
  • Wednesday A slight chance of showers and thunderstorms between 8am and 2pm. Partly sunny, with a high near 85. Breezy, with a south wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
  • Wednesday Night Partly cloudy, with a low around 74. South wind around 15 mph, with gusts as high as 21 mph.
  • Thursday A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
  • Thursday Night Showers and thunderstorms likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 58. North wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Friday Partly sunny, with a high near 69.
  • Friday Night Partly cloudy, with a low around 50.
  • Saturday Mostly sunny, with a high near 70.
  • Saturday Night Mostly clear, with a low around 49.
  • Sunday Sunny, with a high near 73.
  • Sunday Night Partly cloudy, with a low around 56.
  • Monday A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
  • Monday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
  • Tuesday A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.