National Weather Service United States Department of Commerce

Heavy rain possible for the northern Rockies & Plains; severe storms for the Northern Plains

An unseasonably strong storm system in the northwest U.S. will bring showers and thunderstorms, with locally heavy rainfall, to the northern Rockies and northern Plains. Isolated flash floods will be possible in these areas. Some storms could become severe in parts of the Dakotas into Minnesota, with large hail and damaging winds. In addition, temperatures will be 10 to 20 degrees below average.
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Current Conditions

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5 Miles WNW West Thumb WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

This
Afternoon

Scattered Showers Chance for Measurable Precipitation 50%

Scattered
Showers

High: 47 °F

Tonight

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

Low: 34 °F

Sunday

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

High: 50 °F

Sunday
Night

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

Low: 33 °F

Monday

Scattered Showers Chance for Measurable Precipitation 50%

Scattered
Showers

High: 57 °F

Monday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 34 °F

Tuesday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 54 °F

Tuesday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 34 °F

Wednesday

Sunny

Sunny

High: 62 °F

Detailed Forecast

  • This Afternoon Scattered showers and thunderstorms. Some of the storms could produce small hail and gusty winds. Partly sunny, with a high near 47. West northwest wind 11 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
  • Tonight Scattered rain showers before 9pm, then scattered rain and snow showers between 9pm and midnight, then scattered snow showers after midnight. Some thunder is also possible. Mostly cloudy, with a low around 34. Breezy, with a north northwest wind 20 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
  • Sunday Scattered rain and snow showers before noon, then scattered rain showers. Mostly cloudy, with a high near 50. North northwest wind 8 to 18 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
  • Sunday Night Isolated showers before midnight. Mostly cloudy, with a low around 33. Southwest wind 5 to 10 mph becoming southwest 12 to 17 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
  • Monday Isolated showers, then scattered showers and thunderstorms after noon. Partly sunny, with a high near 57. South wind 8 to 13 mph. Chance of precipitation is 50%.
  • Monday Night Scattered rain showers before midnight, then scattered rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 34. Breezy, with a south southwest wind 14 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
  • Tuesday A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 54. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 30%.
  • Tuesday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 34.
  • Wednesday Sunny, with a high near 62.
  • Wednesday Night Mostly clear, with a low around 37.
  • Thursday Sunny, with a high near 65.
  • Thursday Night Mostly clear, with a low around 38.
  • Friday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 64.