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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9 Miles W Wapiti WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Tonight

Heavy Rain Chance for Measurable Precipitation 60%

Heavy
Rain

Low: 47 °F

Saturday

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

High: 63 °F

Saturday
Night

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

Low: 43 °F

Sunday

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

High: 59 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 40 °F

Monday

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

High: 64 °F

Monday
Night

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

Low: 43 °F

Tuesday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 68 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 45 °F

Detailed Forecast

  • Tonight Showers likely and possibly a thunderstorm before 10pm, then scattered showers and thunderstorms, mainly between 10pm and 5am. Some of the storms could produce small hail, gusty winds, and heavy rain. Mostly cloudy, with a low around 47. Light and variable wind becoming west 6 to 11 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Saturday Isolated showers, then scattered showers and thunderstorms after noon. Some of the storms could produce small hail and gusty winds. Mostly sunny, with a high near 63. West wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
  • Saturday Night Scattered showers and thunderstorms. Mostly cloudy, with a low around 43. South southwest wind 6 to 13 mph. Chance of precipitation is 40%. 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 59. South southwest wind around 8 mph. Chance of precipitation is 30%.
  • Sunday Night A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 40. Southwest wind around 6 mph becoming calm after midnight.
  • Monday Scattered showers and thunderstorms, mainly after noon. Partly sunny, with a high near 64. Southwest wind around 6 mph. Chance of precipitation is 40%.
  • Monday Night Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 43. East wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 30%.
  • Tuesday A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 68.
  • Tuesday Night Partly cloudy, with a low around 45.
  • Wednesday Sunny, with a high near 76.
  • Wednesday Night Mostly clear, with a low around 48.
  • Thursday Mostly sunny, with a high near 79.
  • Thursday Night Partly cloudy, with a low around 50.
  • Friday Mostly sunny, with a high near 76.