National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
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Hazardous Weather Conditions

Current Conditions

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Guernsey WY

7 Day Forecast

For More Weather Information:

Cheyenne, WY Local Forecast Office

Overnight

Partly Cloudy

Partly
Cloudy

Low: 16 °C

Thursday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 31 °C

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 14 °C

Friday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 30 °C

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 13 °C

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 29 °C

Saturday
Night

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

Low: 12 °C

Sunday

Partly Sunny

Partly
Sunny

High: 24 °C

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 12 °C

Detailed Forecast

  • Overnight Partly cloudy, with a low around 16. West wind around 10 km/h.
  • Thursday Isolated showers and thunderstorms after 3pm. Some of the storms could produce gusty winds. Mostly sunny, with a high near 31. West wind 10 to 20 km/h. Chance of precipitation is 20%.
  • Thursday Night Partly cloudy, with a low around 14. West southwest wind 10 to 15 km/h becoming north after midnight.
  • Friday A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 30. North wind 10 to 15 km/h becoming southeast in the afternoon.
  • Friday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 13. Southeast wind around 10 km/h. Chance of precipitation is 20%.
  • Saturday A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 29.
  • Saturday Night Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.
  • Sunday Partly sunny, with a high near 24.
  • Sunday Night Partly cloudy, with a low around 12.
  • Monday A slight chance of showers and thunderstorms. Partly sunny, with a high near 29.
  • Monday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 14.
  • Tuesday A chance of showers and thunderstorms. Partly sunny, with a high near 27.
  • Tuesday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 12.
  • Wednesday Mostly sunny, with a high near 27.