Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Freeze Warning |
| Area(s): | Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Northeast Johnson County; Southeast Johnson County; Wind River Basin; Lander Foothills; Natrona County Lower Elevations |
| Effective: | 2026-05-05 @ 12:05 am -> 2026-05-06 @ 10:00 am |
| Onset: | 2026-05-06 @ 2:00 am -> 2026-05-05 @ 5:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-05 @ 12:05 am |
| Headline: | Freeze Warning issued May 4 at 11:05PM MDT until May 6 at 9:00AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Hard freezing temperatures ranging from 22 F to 28 F degrees. * WHERE...Lander Foothills, Natrona County Lower Elevations, Southwest Bighorn Basin, Wind River Basin, Northeast Johnson County, Southeast Bighorn Basin, Southeast Johnson County, Cody Foothills, and North Bighorn Basin. * WHEN...From 1 AM to 9 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation, and possibly damage unprotected outdoor plumbing. |
| Alert: | Winter Weather Advisory |
| Area(s): | Bighorn Mountains Southeast; Wind River Mountains East |
| Effective: | 2026-05-05 @ 12:04 am -> 2026-05-06 @ 2:00 am |
| Onset: | 2026-05-05 @ 2:00 am -> 2026-05-05 @ 5:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-05 @ 12:04 am |
| Headline: | Winter Weather Advisory issued May 4 at 11:04PM MDT until May 6 at 1:00AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow. Total snow accumulations between 8 and 12 inches for South Pass and Powder River Pass. Total snow accumulations for central portions of the Wind River Mountains of 12 to 18 inches. Winds gusting as high as 30 to 40 mph. * WHERE...Wind River Mountains East and Bighorn Mountains Southeast. * WHEN...Until 1 AM MDT Wednesday. * IMPACTS...Travel could be difficult, especially Tuesday afternoon. The hazardous conditions could impact the Tuesday morning and evening commutes over South Pass and Powder River Pass. Falling snow combined with wind gusts around 30 to 40 mph will lead to reductions in visibility. |
| Alert: | Winter Weather Advisory |
| Area(s): | Sierra Madre Range |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 7:00 am |
| Onset: | 2026-05-05 @ 7:00 am -> 2026-05-05 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Weather Advisory issued May 4 at 12:51PM MDT until May 6 at 6:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations up to 4 to 8 inches with accumulations up to 13 inches possible above 9000ft. Winds gusting as high as 35 mph. * WHERE...Sierra Madre Range. * WHEN...From 6 AM Tuesday to 6 AM MDT Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. |
| Alert: | Winter Storm Warning |
| Area(s): | Central Laramie County |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 10:00 am |
| Onset: | 2026-05-05 @ 1:00 am -> 2026-05-05 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Storm Warning issued May 4 at 12:51PM MDT until May 6 at 9:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 4 and 10 inches possible. * WHERE...Central Laramie County. * WHEN...From midnight tonight to 9 AM MDT Wednesday. * IMPACTS...The weight of the heavy, wet snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. The hazardous conditions could impact the morning and evening commutes on Tuesday, and the morning commute on Wednesday. |
| Alert: | Winter Weather Advisory |
| Area(s): | Central Laramie Range and Southwest Platte County |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 10:00 am |
| Onset: | 2026-05-05 @ 1:00 am -> 2026-05-05 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Weather Advisory issued May 4 at 12:51PM MDT until May 6 at 9:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations up to 4 to 9 inches mainly above 5500 ft in elevation. Lower totals are expected at lower elevations. * WHERE...Central Laramie Range and Southwest Platte County. * WHEN...From midnight tonight to 9 AM MDT Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | North Laramie Range |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 10:00 am |
| Onset: | 2026-05-04 @ 10:00 pm -> 2026-05-05 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Weather Advisory issued May 4 at 12:51PM MDT until May 6 at 9:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 4 and 8 inches. * WHERE...North Laramie Range. * WHEN...From 9 PM this evening to 9 AM MDT Wednesday. * IMPACTS...Outdoor recreation could become dangerous to those caught unprepared for hazardous winter conditions. Hunters, hikers, and snowmobilers may become disoriented and lost due to low visibility in falling and blowing snow. |
| Alert: | Winter Weather Advisory |
| Area(s): | Shirley Basin; Laramie Valley |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 10:00 am |
| Onset: | 2026-05-05 @ 1:00 am -> 2026-05-05 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Weather Advisory issued May 4 at 12:51PM MDT until May 6 at 9:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 3 and 9 inches. Areas on the western side of the Laramie Valley will be favored for heavier snow totals. * WHERE...Shirley Basin and Laramie Valley. * WHEN...From midnight tonight to 9 AM MDT Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. The heavy, wet snow could lead to broken tree branches. |
| Alert: | Winter Storm Warning |
| Area(s): | Snowy Range |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 1:00 pm |
| Onset: | 2026-05-04 @ 10:00 pm -> 2026-05-05 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Storm Warning issued May 4 at 12:51PM MDT until May 6 at 12:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 10 and 18 inches mainly above 9000 ft in elevation and on the northern and eastern sides of the range. * WHERE...Snowy Range. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Outdoor recreation could become dangerous to those caught unprepared for hazardous winter conditions. Hunters, hikers, and snowmobilers may become disoriented and lost due to low visibility in falling and blowing snow. |
| Alert: | Winter Storm Warning |
| Area(s): | South Laramie Range; South Laramie Range Foothills |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 1:00 pm |
| Onset: | 2026-05-04 @ 10:00 pm -> 2026-05-05 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Storm Warning issued May 4 at 12:51PM MDT until May 6 at 12:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 7 and 17 inches. * WHERE...South Laramie Range and Foothills including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The weight of the heavy, wet snow on tree limbs and powerlines and could cause sporadic power outages. |
| Alert: | Winter Storm Warning |
| Area(s): | North Snowy Range Foothills |
| Effective: | 2026-05-04 @ 1:51 pm -> 2026-05-06 @ 1:00 pm |
| Onset: | 2026-05-04 @ 10:00 pm -> 2026-05-05 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-04 @ 1:51 pm |
| Headline: | Winter Storm Warning issued May 4 at 12:51PM MDT until May 6 at 12:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick, slushy, and hazardous. |