National Weather Service United States Department of Commerce

A stalled frontal boundary and ample monsoonal moisture will lead to flash flood potential from the Great Basin to the Great Plains tonight and Tuesday

A stalled frontal boundary will set up along the southern and central Rockies for the next couple of days providing focus for showers and thunderstorms. In addition, ample monsoonal moisture will stream in across the southwest bringing enough moisture to introduce a flash flood threat from the Great Basin and Southwest eastward across the central and southern Rockies into the adjacent Plains.
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Hazardous Weather Conditions

Current Conditions

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4 Miles NW Guernsey WY

7 Day Forecast

For More Weather Information:

Cheyenne, WY Local Forecast Office

Today

Heavy Rain Chance for Measurable Precipitation 60%

Heavy
Rain

High: 77 °F

Tonight

Scattered Showers Chance for Measurable Precipitation 50%

Scattered
Showers

Low: 58 °F

Wednesday

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

High: 75 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 55 °F

Thursday

Sunny

Sunny

High: 83 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 58 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 85 °F

Friday
Night

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

Low: 58 °F

Saturday

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

High: 85 °F

Detailed Forecast

  • Today Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 77. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
  • Tonight Scattered showers and thunderstorms before 3am, then a slight chance of showers. Mostly cloudy, with a low around 58. East northeast wind 5 to 10 mph becoming south southeast in the evening. Chance of precipitation is 50%.
  • Wednesday Isolated showers before noon. Mostly sunny, with a high near 75. North wind around 5 mph becoming west southwest in the afternoon. Chance of precipitation is 20%.
  • Wednesday Night Partly cloudy, with a low around 55. South wind around 5 mph.
  • Thursday Sunny, with a high near 83. Southwest wind around 5 mph becoming southeast in the afternoon.
  • Thursday Night Partly cloudy, with a low around 58.
  • Friday Mostly sunny, with a high near 85.
  • Friday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58.
  • Saturday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
  • Saturday Night Partly cloudy, with a low around 59.
  • Sunday Sunny, with a high near 87.
  • Sunday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
  • Monday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.