National Weather Service United States Department of Commerce

Heavy rain possible for parts of the northern Rockies & Plains; Severe storms for the Upper Midwest

An unseasonably strong storm system in the northwest U.S. will bring showers and thunderstorms, some heavy, to parts of the northern Rockies and northern Plains through Saturday. Isolated flash floods will be possible in these areas. Some of the storms could be severe in parts of the Dakotas into Minnesota, with large hail and damaging winds.
Read More...

Hazardous Weather Conditions

Current Conditions

En Español

Share |

Casper WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Overnight

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

Low: 14 °C

Saturday

Scattered Showers Chance for Measurable Precipitation 50%

Scattered
Showers

High: 21 °C

Saturday
Night

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

Low: 10 °C

Sunday

Windy

Windy

High: 21 °C

Sunday
Night

Breezy

Breezy

Low: 12 °C

Monday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 24 °C

Monday
Night

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

Low: 10 °C

Tuesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 21 °C

Tuesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 11 °C

Detailed Forecast

  • Overnight Isolated showers. Mostly cloudy, with a low around 14. South southwest wind 13 to 18 km/h. Chance of precipitation is 20%.
  • Saturday Scattered showers, with thunderstorms also possible after noon. Cloudy, then gradually becoming mostly sunny, with a high near 21. Breezy, with a west wind 32 to 42 km/h, with gusts as high as 60 km/h. Chance of precipitation is 50%.
  • Saturday Night Scattered showers and thunderstorms before 9pm, then isolated showers between 9pm and midnight. Mostly cloudy, with a low around 10. Windy, with a west wind 48 to 53 km/h increasing to 60 to 65 km/h after midnight. Winds could gust as high as 90 km/h. Chance of precipitation is 40%.
  • Sunday Mostly sunny, with a high near 21. Windy, with a west wind 50 to 55 km/h decreasing to 39 to 44 km/h in the afternoon. Winds could gust as high as 75 km/h.
  • Sunday Night Partly cloudy, with a low around 12. Breezy, with a south southwest wind 37 to 42 km/h, with gusts as high as 60 km/h.
  • Monday Isolated showers and thunderstorms after noon. Mostly sunny, with a high near 24. Windy, with a west southwest wind 40 to 50 km/h decreasing to 27 to 37 km/h in the afternoon. Winds could gust as high as 70 km/h. Chance of precipitation is 20%.
  • Monday Night Scattered showers and thunderstorms before midnight, then isolated showers. Mostly cloudy, with a low around 10. Breezy, with a south southeast wind 18 to 28 km/h becoming southwest 32 to 42 km/h in the evening. Winds could gust as high as 60 km/h. Chance of precipitation is 30%.
  • Tuesday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 21.
  • Tuesday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 11.
  • Wednesday A 20 percent chance of showers. Mostly sunny, with a high near 23.
  • Wednesday Night Mostly clear, with a low around 12.
  • Thursday Sunny, with a high near 28.
  • Thursday Night Mostly clear, with a low around 12.
  • Friday Sunny, with a high near 29.