Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest |
| Effective: | 2026-07-24 @ 2:09 pm -> 2026-07-25 @ 2:15 pm |
| Onset: | 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-24 @ 2:09 pm |
| Headline: | Red Flag Warning issued July 24 at 1:09PM MDT until July 26 at 12:00AM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has issued a Red Flag Warning...which is in effect from noon Saturday to midnight MDT Saturday night. The Fire Weather Watch is no longer in effect. * IMPACTS: Low humidities, hot temperatures, and increasing thunderstorm activity will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...125...126...127 128...129. In Southeast MT Fire Zones...130...131...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In Northwest SD...Harding. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Carter...Custer...Fallon...Powder River Rosebud...Treasure. In Southwest MT...Gallatin. * WIND: Southwest 10 to 15 mph with gusts up to 25 mph. * THUNDERSTORMS: Widely scattered afternoon and evening thunderstorms will produce gusty and erratic winds, and spotty rainfall. * HUMIDITY: As low as 11 percent. * TEMPERATURES: Up to 108. |
| Alert: | Heat Advisory |
| Area(s): | Central Laramie County; East Laramie County |
| Effective: | 2026-07-24 @ 1:44 pm -> 2026-07-25 @ 7:00 am |
| Onset: | 2026-07-25 @ 12:00 pm -> 2026-07-27 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-24 @ 1:44 pm |
| Headline: | Heat Advisory issued July 24 at 12:44PM MDT until July 27 at 9:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Afternoon high temperatures between 95 and 99 degrees. Overnight low temperatures in the mid 60s. * WHERE...Central Laramie County and East Laramie County. * WHEN...From 11 AM Saturday to 9 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Box Butte; Scotts Bluff; Banner; Morrill; Kimball; Cheyenne; South Sioux; Converse County Lower Elevations; Niobrara County; East Platte County; Goshen County |
| Effective: | 2026-07-24 @ 1:44 pm -> 2026-07-25 @ 7:00 am |
| Onset: | 2026-07-25 @ 12:00 pm -> 2026-07-27 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-24 @ 1:44 pm |
| Headline: | Heat Advisory issued July 24 at 12:44PM MDT until July 27 at 9:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Afternoon high temperatures between 100 and 106 degrees. Overnight low temperatures in the mid 60s to around 70 degrees. * WHERE...Portions of panhandle Nebraska and east central and southeast Wyoming. * WHEN...From 11 AM Saturday to 9 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Golden Valley; Northern Big Horn; Southern Rosebud; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Northeastern Yellowstone; Southwestern Yellowstone; Sheridan Foothills |
| Effective: | 2026-07-24 @ 1:35 pm -> 2026-07-25 @ 1:45 pm |
| Onset: | 2026-07-24 @ 1:35 pm -> 2026-07-26 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-24 @ 1:35 pm |
| Headline: | Extreme Heat Warning issued July 24 at 12:35PM MDT until July 26 at 9:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures of 98 to 108, hottest over eastern Montana. Saturday is expected to be the hottest day. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...Until 9 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration. |
| Alert: | Heat Advisory |
| Area(s): | Northern Campbell; Southern Campbell; Western Crook; Weston County Plains; Newcastle |
| Effective: | 2026-07-24 @ 12:31 pm -> 2026-07-25 @ 3:45 am |
| Onset: | 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 9:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-24 @ 12:31 pm |
| Headline: | Heat Advisory issued July 24 at 11:31AM MDT until July 26 at 8:00PM MDT by NWS Rapid City SD |
| Description: |
* WHAT...Heat index values to around 100 expected. * WHERE...Newcastle, Northern Campbell, Southern Campbell, Western Crook, and Weston County Plains. * WHEN...From noon Saturday to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| 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; Northeastern Crook |
| Effective: | 2026-07-24 @ 12:31 pm -> 2026-07-25 @ 3:45 am |
| Onset: | 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 9:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-24 @ 12:31 pm |
| Headline: | Heat Advisory issued July 24 at 11:31AM MDT until July 26 at 8:00PM MDT by NWS Rapid City SD |
| Description: |
* WHAT...Heat index values up to 105 expected. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...From noon MDT /1 PM CDT/ Saturday to 8 PM MDT /9 PM CDT/ Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Heat Advisory |
| 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: | 2026-07-24 @ 12:26 pm -> 2026-07-25 @ 1:00 pm |
| Onset: | 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-24 @ 12:26 pm |
| Headline: | Heat Advisory issued July 24 at 11:26AM MDT until July 26 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Very hot conditions with high temperatures from 95 to 102 degrees. * WHERE...Lower elevations of central and north-central Wyoming, east of the continental divide. * WHEN...From noon Saturday to 9 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Red Flag Warning |
| Area(s): | Northern Black Hills; Central Black Hills; Southern Black Hills; Fall River County Area; Northern Foot Hills; Eastern Foot Hills; Custer County Plains; Pine Ridge Area; Butte County Area; Perkins County; West Central Plains; Ziebach County; Haakon County Area; Badlands Area; Bennett County Area; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains; Wyoming Black Hills |
| Effective: | 2026-07-24 @ 10:37 am -> 2026-07-24 @ 6:45 pm |
| Onset: | 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-24 @ 10:37 am |
| Headline: | Red Flag Warning issued July 24 at 9:37AM MDT until July 26 at 12:00AM MDT by NWS Rapid City SD |
| Description: |
...RED FLAG WARNING IN EFFECT FROM NOON SATURDAY TO MIDNIGHT MDT SATURDAY NIGHT DUE TO DRY LIGHTNING FOR NORTHERN BLACK HILLS, CENTRAL BLACK HILLS, SOUTHERN BLACK HILLS, FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, PERKINS COUNTY, WEST CENTRAL PLAINS, ZIEBACH COUNTY, HAAKON COUNTY AREA, BADLANDS AREA, BENNETT COUNTY AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, WESTON COUNTY PLAINS, AND WYOMING BLACK HILLS... The National Weather Service in Rapid City SD has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, and 333. * TIMING...From noon Saturday to midnight MDT Saturday Night. * LIGHTNING...Frequent dry lightning is possible with thunderstorms. * OUTFLOW WINDS...Gusty and erratic winds are possible in and near any thunderstorms. * THUNDERSTORMS...Thunderstorms with little to no rain, gusty and erratic winds, and frequent lightning are possible. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |