Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Heat Advisory |
| Area(s): | Harding; Northern Perkins; Butte; Northern Meade Co Plains; Ziebach; Northern Foothills; Rapid City; Southern Foothills; Custer Co Plains; Pennington Co Plains; Haakon; Western Fall River; Northern Oglala Lakota; Northern Jackson; Bennett; Mellette; Todd; Tripp; Sturgis/Piedmont Foothills; Southern Meade Co Plains; Hermosa Foothills; Eastern Fall River; Southern Oglala Lakota; Southern Jackson; Southern Perkins; Northern Campbell; Southern Campbell; Western Crook; Weston County Plains; Newcastle; Northeastern Crook |
| Effective: | 2026-07-13 @ 6:29 am -> 2026-07-13 @ 9:30 pm |
| Onset: | 2026-07-13 @ 6:29 am -> 2026-07-16 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-13 @ 6:29 am |
| Headline: | Heat Advisory issued July 13 at 5:29AM MDT until July 16 at 9:00PM MDT by NWS Rapid City SD |
| Description: |
* WHAT...Heat index values between 95 and 105. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...Until 9 PM MDT /10 PM CDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Northeast Johnson County; Southeast Johnson County; Jackson Hole; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Star Valley; Upper Green River Basin Foothills; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County |
| Effective: | 2026-07-13 @ 3:16 am -> 2026-07-13 @ 7:15 pm |
| Onset: | 2026-07-13 @ 3:16 am -> 2026-07-14 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-13 @ 3:16 am |
| Headline: | Extreme Heat Warning issued July 13 at 2:16AM MDT until July 14 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Dangerously hot conditions with temperatures from 100 to 105 degrees below 6,000 feet and 90 to 100 degrees between 6,000 and 7,000 feet each day. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...Until 9 PM MDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Custer; Fallon; Powder River; Carter; Southern Rosebud; Sheridan Foothills |
| Effective: | 2026-07-13 @ 3:02 am -> 2026-07-14 @ 3:15 am |
| Onset: | 2026-07-13 @ 3:02 am -> 2026-07-16 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-13 @ 3:02 am |
| Headline: | Extreme Heat Warning issued July 13 at 2:02AM MDT until July 16 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Extremely hot daytime temperatures combined with warm overnight lows will produce cumulative heat stress. * WHERE...Portions of southeast Montana and north central Wyoming. * WHEN...Until midnight MDT Wednesday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with temperatures of 98 to 106 today through Wednesday. Overnight lows will remain well above normal providing only limited relief. |
| Alert: | Red Flag Warning |
| Area(s): | Pine Ridge/Nebraska National Forest; Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland; Middle North Platte River Basin/Niobrara and Converse High Plains; North Laramie Range and Adjacent High Plains; North Laramie Valley/Shirley Basin; Southwest Carbon County; North Snowy Range Foothills; Laramie Foothills and High Plains; Laramie East High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin |
| Effective: | 2026-07-13 @ 12:32 am -> 2026-07-13 @ 7:00 pm |
| Onset: | 2026-07-13 @ 12:32 am -> 2026-07-15 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-13 @ 12:32 am |
| Headline: | Red Flag Warning issued July 12 at 11:32PM MDT until July 15 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
RED FLAG Warning was extended through Wednesday. * AFFECTED AREA...Fire weather zones 417, 418, 423, and 430 through 434. * WIND...South 10 to 15 mph gusting up to 35 mph * HUMIDITY...Between 10 and 15 percent * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Heat Advisory |
| Area(s): | Dawes; Box Butte; Scotts Bluff; Banner; Morrill; Kimball; Cheyenne; North Sioux; South Sioux; Converse County Lower Elevations; Niobrara County; East Platte County; Goshen County; Central Laramie County; East Laramie County |
| Effective: | 2026-07-13 @ 12:23 am -> 2026-07-13 @ 4:00 pm |
| Onset: | 2026-07-13 @ 12:23 am -> 2026-07-16 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-13 @ 12:23 am |
| Headline: | Heat Advisory issued July 12 at 11:23PM MDT until July 16 at 12:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Afternoon temperatures will be near or exceed 100 degrees with overnight temperatures dipping to between 65 to 70, providing little relief. * WHERE...Portions of panhandle Nebraska and east central and southeast Wyoming. * WHEN...Until midnight MDT Wednesday Night. * IMPACTS...Hot temperatures and poor hydration may cause heat illnesses or injuries. |
| Alert: | Extreme Heat Warning |
| Area(s): | Southwest Wyoming |
| Effective: | 2026-07-12 @ 11:49 am -> 2026-07-13 @ 3:00 am |
| Onset: | 2026-07-12 @ 11:49 am -> 2026-07-13 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Salt Lake City UT on 2026-07-12 @ 11:49 am |
| Headline: | Extreme Heat Warning issued July 12 at 10:49AM MDT until July 13 at 9:00PM MDT by NWS Salt Lake City UT |
| Description: |
* WHAT...Dangerously hot conditions with temperatures up to 98 degrees expected. * WHERE...Southwest Wyoming. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...There is high confidence that temperatures will warm to values challenging daily, monthly, or even all-time high temperature records Sunday and Monday. |