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Cheyenne faces cold snap; snow, subzero windchills ahead

Lions Park (Stew Dyer / Cap City News)

CHEYENNE, Wyo. — Cheyenne will experience a brief continuation of snowfall this morning, tapering off by early afternoon. Gusty winds accompanying the snow may lead to instances of blowing snow across the area.

A significant drop in temperature is on the horizon, according to the National Weather Service in Cheyenne. Overnight lows are expected to plunge to 10–15 degrees, bringing subzero windchills into the early hours.

Key Forecast Details

  • Snow will linger in southeast Wyoming through the morning, decreasing by early afternoon.
  • Gusty winds could cause blowing snow, impacting visibility and travel.
  • Temperatures will fall sharply tonight, with dangerously low windchills anticipated.

The low-pressure system responsible for the current weather conditions is weakening, as indicated by satellite imagery showing thinning and warming cloud tops. A dry slot from the north has cleared the western Nebraska Panhandle, with radar confirming the lack of precipitation in that region.

Light snow, however, will persist for a few more hours along key corridors, including Interstate 80 from Laramie to Pine Bluffs and I-25 from Cheyenne to Wheatland.

Following the storm’s departure, the area will see a decrease in wind speeds, though gusts of 25–40 mph may persist through the afternoon. The combination of calm winds tonight, fresh snowpack and partly to mostly cloudy skies will facilitate radiational cooling, dropping temperatures into the lower teens. These conditions, coupled with breezy winds, will create subzero windchill values.

A brief shortwave may trigger light mountain showers and maintain elevated winds into the afternoon. However, overall, the region will experience a quieter weather pattern with temperatures remaining below average.

Outlook for the Week

The weather is expected to stabilize midweek as an upper-level ridge builds over the western United States, gradually moving east. This will usher in northwesterly flow aloft, leading to a warming trend with daytime temperatures reaching the 40s and 50s.

The ridge will maintain warmer conditions through the end of the week, though daily chances for mountain snow showers persist due to disturbances moving through the ridge.

A significant shift is forecast for the weekend, with a closed upper-level low developing off the western coast, increasing the likelihood of widespread precipitation, including mountain snow showers. Models differ on the system’s evolution into next week, with potential impacts on precipitation patterns across the area.

Detailed Forecast for Cheyenne

  • Today: Expect patchy blowing snow and partly sunny skies with a high near 29. Windchill values will range between minus 5 and 5 degrees. Conditions will be blustery, with a north wind of 20–25 mph and gusts of up to 35 mph.
  • Tonight: Patchy blowing snow will continue until 7 p.m. The night will be partly cloudy, with a low around 13. It’ll remain blustery, as a north wind of 15–20 mph shifts to the west at 5–10 mph after midnight.
  • Tuesday: There’s a 40% chance of snow showers, mainly after 8 a.m. Expect partly sunny skies with a high near 39. A west wind of 5–10 mph will turn to the north in the afternoon.
  • Tuesday Night: Snow showers are possible before midnight, with a 30% chance of precipitation. It will be mostly cloudy with a low around 23. A northeast wind of 5–10 mph will shift to the southwest after midnight.
  • Wednesday: The day will be mostly sunny with a high near 46. Breezy conditions will prevail, with a west-northwest wind of 10–20 mph.
  • Wednesday Night: Expect mostly clear skies with a low around 26. Conditions will remain breezy.
  • Thursday: It’ll be mostly sunny with a high near 57.
  • Thursday Night: The night will be partly cloudy with a low around 33.
  • Friday: After noon, there’s a slight chance of showers. The day will be mostly sunny and breezy with a high near 58.
  • Friday Night: Showers are likely, mainly before midnight. The night will be mostly cloudy with a low around 32.
  • Saturday: Showers may occur under mostly sunny and breezy conditions, with a high near 58.
  • Saturday Night: There’s a chance of showers in the partly cloudy and breezy night, with a low around 32.
  • Sunday: Showers are possible again under mostly sunny and breezy skies, with a high near 60.

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