National Weather Service United States Department of Commerce

The flash flooding threat shifts slightly east on Friday while both coasts and Hawaii continue high surf issues due to tropical systems

The potential for heavy rainfall and flash flooding will shift east on Friday across parts of the Upper Midwest into the eastern Great Lakes. Meanwhile, portions of both the East and West Coasts, as well as Hawaii, will continue to have high surf and rip current potential due to Hurricane Cristobal and Tropical Storm Marie respectively. Caution should be used on area beaches.
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Current Conditions

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Knoxville IA

7 Day Forecast

For More Weather Information:

Des Moines, IA Local Forecast Office

Overnight

Heavy Rain Chance for Measurable Precipitation 50%

Heavy
Rain

Low: 21 °C

Friday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 28 °C

Friday
Night

Thunderstorms Likely Chance for Measurable Precipitation 70%

Thunderstorms
Likely

Low: 19 °C

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 27 °C

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 18 °C

Sunday

Mostly Sunny

Mostly
Sunny

High: 30 °C

Sunday
Night

Thunderstorms Likely Chance for Measurable Precipitation 70%

Thunderstorms
Likely

Low: 21 °C

Labor
Day

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 27 °C

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 17 °C

Detailed Forecast

  • Overnight Scattered showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 21. South southeast wind around 13 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
  • Friday A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 28. South southwest wind around 14 km/h. New rainfall amounts between 5 and 7.5 mm possible.
  • Friday Night Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 19. South southwest wind 8 to 11 km/h. Chance of precipitation is 70%. New rainfall amounts between 7.5 mm and 1 cm possible.
  • Saturday A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 27. West wind 8 to 11 km/h. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.
  • Saturday Night Partly cloudy, with a low around 18. West wind 5 to 8 km/h becoming south after midnight.
  • Sunday Mostly sunny, with a high near 30.
  • Sunday Night Showers and thunderstorms likely. Mostly cloudy, with a low around 21. Chance of precipitation is 70%.
  • Labor Day A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 27.
  • Monday Night Partly cloudy, with a low around 17.
  • Tuesday Mostly sunny, with a high near 27.
  • Tuesday Night Partly cloudy, with a low around 17.
  • Wednesday Mostly sunny, with a high near 28.
  • Wednesday Night Partly cloudy, with a low around 19.
  • Thursday Mostly sunny, with a high near 29.