Cheyenne, Wyoming

Regional Weather Alerts


Alert: Freeze Warning
Area(s): Star Valley
Effective: 2026-09-14 @ 10:18 pm -> 2026-09-15 @ 10:00 am
Onset: 2026-09-15 @ 4:00 am -> 2026-09-15 @ 10:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-09-14 @ 10:18 pm
Headline: Freeze Warning issued September 14 at 9:18PM MDT until September 15 at 9:00AM MDT by NWS Riverton WY
Description: * WHAT...Sub-freezing temperatures 26 to 30 degrees. Isolated cold
prone areas dropping to 22 to 26 degrees.

* WHERE...Star Valley.

* WHEN...From 3 AM to 9 AM MDT Tuesday.

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

* ADDITIONAL DETAILS...Foothill locations may see Tuesday morning
lows closer to 32 degrees.