National Weather Service United States Department of Commerce

Severe weather possible for parts of northern Plains and mid/upper Mississippi River Valley

Severe thunderstorms are expected across portions of the northern Plains and upper Mississippi Valley Wednesday. Large hail and damaging winds will be the main threats with these storms, but a tornado or two could occur as well. Other strong to severe storms may occur from late afternoon into the overnight hours from the middle Mississippi Valley into the lower Ohio Valley.
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Hazardous Weather Conditions

Current Conditions

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Casper WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Overnight

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

Low: 62 °F

Wednesday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 83 °F

Wednesday
Night

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

Low: 59 °F

Thursday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 84 °F

Thursday
Night

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

Low: 57 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 77 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 55 °F

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 75 °F

Saturday
Night

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

Low: 53 °F

Detailed Forecast

  • Overnight Scattered showers and thunderstorms. Mostly cloudy, with a low around 62. West southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
  • Wednesday Isolated showers, with thunderstorms also possible after 9am. Partly sunny, with a high near 83. West southwest wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
  • Wednesday Night Isolated showers and thunderstorms before midnight. Partly cloudy, with a low around 59. West wind 6 to 11 mph. Chance of precipitation is 20%.
  • Thursday Isolated showers and thunderstorms after noon. Mostly sunny, with a high near 84. Southwest wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
  • Thursday Night Isolated showers and thunderstorms. Mostly cloudy, with a low around 57. West southwest wind 5 to 14 mph becoming east after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
  • Friday A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. West southwest wind 6 to 10 mph.
  • Friday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 55. West southwest wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 20%.
  • Saturday A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
  • Saturday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
  • Sunday A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 74.
  • Sunday Night Partly cloudy, with a low around 52.
  • Monday Mostly sunny, with a high near 79.
  • Monday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56.
  • Tuesday Mostly sunny, with a high near 75.