Cheyenne, Wyoming

Regional Weather Alerts


Alert: Freeze Warning
Area(s): Ferris/Seminoe/Shirley Mountains; Shirley Basin; Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Upper North Platte River Basin; Laramie Valley; South Laramie Range
Effective: 2026-05-21 @ 2:58 pm -> 2026-05-22 @ 10:00 am
Onset: 2026-05-22 @ 1:00 am -> 2026-05-22 @ 10:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-05-21 @ 2:58 pm
Headline: Freeze Warning issued May 21 at 1:58PM MDT until May 22 at 9:00AM MDT by NWS Cheyenne WY
Description: * WHAT...Sub-freezing temperatures between 25 and 32 degrees
expected.

* WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains,
North Snowy Range Foothills, Shirley Basin, Southwest Carbon
County, Upper North Platte River Basin, Laramie Valley, and South
Laramie Range.

* WHEN...From midnight tonight to 9 AM MDT Friday.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.