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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Current Conditions

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21 Miles ENE Shirley Basin WY

7 Day Forecast

For More Weather Information:

Cheyenne, WY Local Forecast Office

Overnight

Heavy Rain Chance for Measurable Precipitation 20%

Heavy
Rain

Low: 52 °F

Tuesday

Heavy Rain Chance for Measurable Precipitation 70%

Heavy
Rain

High: 63 °F

Tuesday
Night

Heavy Rain Chance for Measurable Precipitation 70%

Heavy
Rain

Low: 48 °F

Wednesday

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

High: 63 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 48 °F

Thursday

Mostly Sunny

Mostly
Sunny

High: 68 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 51 °F

Friday

Chance Thunderstorms

Chance
Thunderstorms

High: 65 °F

Friday
Night

Chance Thunderstorms

Chance
Thunderstorms

Low: 50 °F

Detailed Forecast

  • Overnight Isolated showers and thunderstorms. Some of the storms could produce heavy rain. Areas of fog. Otherwise, cloudy, with a low around 52. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
  • Tuesday Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rain. Cloudy, with a high near 63. Southeast wind 5 to 15 mph becoming east northeast in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
  • Tuesday Night Showers likely and possibly a thunderstorm before midnight, then scattered showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 48. East wind 5 to 15 mph. Chance of precipitation is 70%.
  • Wednesday Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 63. East wind 5 to 10 mph. Chance of precipitation is 30%.
  • Wednesday Night Partly cloudy, with a low around 48. East southeast wind 5 to 10 mph.
  • Thursday Mostly sunny, with a high near 68.
  • Thursday Night Partly cloudy, with a low around 51.
  • Friday A chance of showers and thunderstorms. Partly sunny, with a high near 65.
  • Friday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
  • Saturday A chance of showers and thunderstorms. Partly sunny, with a high near 65.
  • Saturday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51.
  • Sunday A chance of showers and thunderstorms. Mostly sunny, with a high near 67.
  • Sunday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 50.
  • Monday A chance of showers and thunderstorms. Partly sunny, with a high near 63.