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.
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Hazardous Weather Conditions

Current Conditions

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19 Miles NNW Wapiti WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Overnight

Scattered Showers Chance for Measurable Precipitation 50%

Scattered
Showers

Low: 43 °F

Saturday

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

High: 59 °F

Saturday
Night

Scattered Showers Chance for Measurable Precipitation 50%

Scattered
Showers

Low: 37 °F

Sunday

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

High: 54 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 38 °F

Monday

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

High: 59 °F

Monday
Night

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

Low: 39 °F

Tuesday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 64 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 40 °F

Detailed Forecast

  • Overnight Scattered showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 43. West wind 7 to 11 mph. Chance of precipitation is 50%.
  • Saturday Isolated showers, then scattered showers and thunderstorms after noon. Some of the storms could produce small hail and gusty winds. Partly sunny, with a high near 59. West wind 10 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
  • Saturday Night Scattered showers and thunderstorms. Mostly cloudy, with a low around 37. South wind 6 to 11 mph becoming west northwest in the evening. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Sunday Scattered showers and thunderstorms. Mostly cloudy, with a high near 54. West northwest wind around 8 mph becoming southwest in the afternoon. Chance of precipitation is 40%.
  • Sunday Night A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 38. South southeast wind 5 to 7 mph becoming light and variable in the evening.
  • Monday Scattered showers and thunderstorms, mainly after noon. Partly sunny, with a high near 59. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.
  • Monday Night Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 39. East northeast wind 5 to 7 mph becoming west northwest after midnight. Chance of precipitation is 40%.
  • Tuesday A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 64.
  • Tuesday Night Partly cloudy, with a low around 40.
  • Wednesday Sunny, with a high near 72.
  • Wednesday Night Mostly clear, with a low around 44.
  • Thursday Mostly sunny, with a high near 74.
  • Thursday Night Partly cloudy, with a low around 46.
  • Friday Mostly sunny, with a high near 72.