National Weather Service United States Department of Commerce

On Saturday, severe weather will be possible across portions of the northern Plains while dry and hot conditions begin returning to the West.

Severe weather is possible over parts of the northern Plains on Saturday. During the late afternoon and early evening hours, large hail and isolated tornadoes will be the primary threats with damaging winds becoming the greatest threat in the late evening hours. Out west, hot and dry conditions begin to return bringing increased heat dangers and fire weather concerns.
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Hazardous Weather Conditions

Current Conditions

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Ottumwa IA

7 Day Forecast

For More Weather Information:

Des Moines, IA Local Forecast Office

Overnight

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

Low: 65 °F

Saturday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 81 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 66 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 88 °F

Sunday
Night

Thunderstorms Likely Chance for Measurable Precipitation 70%

Thunderstorms
Likely

Low: 69 °F

Labor
Day

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 82 °F

Monday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 63 °F

Tuesday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 81 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 63 °F

Detailed Forecast

  • Overnight Showers and thunderstorms likely, mainly before 3am. Mostly cloudy, with a low around 65. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
  • Saturday Isolated showers and thunderstorms before 9am. Partly sunny, with a high near 81. West wind around 7 mph. Chance of precipitation is 20%.
  • Saturday Night Partly cloudy, with a low around 66. West northwest wind around 5 mph becoming light and variable.
  • Sunday Mostly sunny, with a high near 88. South wind 6 to 14 mph.
  • Sunday Night Showers and thunderstorms likely. Mostly cloudy, with a low around 69. South southeast wind 10 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
  • Labor Day A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Monday Night A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
  • Tuesday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
  • Tuesday Night Partly cloudy, with a low around 63.
  • Wednesday Mostly sunny, with a high near 83.
  • Wednesday Night Partly cloudy, with a low around 68.
  • Thursday Mostly sunny, with a high near 87.
  • Thursday Night Partly cloudy, with a low around 70.
  • Friday Mostly sunny, with a high near 86.