Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Fire Weather Watch |
| Area(s): | Fall River County Area; Northern Foot Hills; Eastern Foot Hills; Custer County Plains; Pine Ridge Area; Butte County Area; West Central Plains; Badlands Area; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains |
| Effective: | 2026-07-11 @ 6:37 am -> 2026-07-11 @ 2:45 pm |
| Onset: | 2026-07-12 @ 11:00 am -> 2026-07-12 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Rapid City SD on 2026-07-11 @ 6:37 am |
| Headline: | Fire Weather Watch issued July 11 at 5:37AM MDT until July 12 at 8:00PM MDT by NWS Rapid City SD |
| Description: |
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, WEST CENTRAL PLAINS, BADLANDS AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, AND WESTON COUNTY PLAINS... * AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, 322, 323, 324, 325, 326, 327, 329, and 332. * TIMING...From Sunday morning through Sunday evening. * WINDS...Southeast winds 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...Relative Humidity between 7 to 20 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| 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: | 2026-07-11 @ 6:37 am -> 2026-07-11 @ 9:45 pm |
| Onset: | 2026-07-11 @ 1:00 pm -> 2026-07-14 @ 9:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-11 @ 6:37 am |
| Headline: | Heat Advisory issued July 11 at 5:37AM MDT until July 14 at 8:00PM MDT by NWS Rapid City SD |
| Description: |
* WHAT...Heat index values between 95 and 105 expected. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...From noon MDT /1 PM CDT/ today to 8 PM MDT /9 PM CDT/ Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Southwest Wyoming |
| Effective: | 2026-07-11 @ 6:14 am -> 2026-07-11 @ 9:15 pm |
| Onset: | 2026-07-11 @ 1:00 pm -> 2026-07-13 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Salt Lake City UT on 2026-07-11 @ 6:14 am |
| Headline: | Extreme Heat Warning issued July 11 at 5:14AM 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...From noon today to 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 Saturday through Monday. |
| Alert: | Fire Weather Watch |
| Area(s): | North Bighorn Basin/Worland BLM; Cody Foothills; Natrona County/Casper BLM; Johnson County/Casper BLM; South Bighorn Basin/Worland BLM; Upper Wind River Basin/Wind River Basin |
| Effective: | 2026-07-11 @ 3:18 am -> 2026-07-11 @ 7:00 pm |
| Onset: | 2026-07-12 @ 12:00 pm -> 2026-07-12 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-11 @ 3:18 am |
| Headline: | Fire Weather Watch issued July 11 at 2:18AM MDT until July 12 at 10:00PM MDT by NWS Riverton WY |
| Description: |
* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283. In North Central WY Fire Zones...275...276...281...282. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park Washakie. * WIND: South to southeast 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 5 percent. * TEMPERATURES: Highs between 98 to 110. |
| Alert: | Fire Weather Watch |
| 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 |
| Effective: | 2026-07-11 @ 3:12 am -> 2026-07-12 @ 3:15 am |
| Onset: | 2026-07-12 @ 9:00 am -> 2026-07-12 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-11 @ 3:12 am |
| Headline: | Fire Weather Watch issued July 11 at 2:12AM MDT until July 12 at 9:00PM MDT by NWS Billings MT |
| Description: |
* IMPACTS: Low humidities, hot temperatures, and strong gusty winds may create erratic fire behavior. * AFFECTED AREA: In North Central WY Fire Zone...274. 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...Sheridan. 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: South 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: Minimums of 5 to 10 percent. * TEMPERATURES: Highs of 105 to 112. |
| Alert: | Extreme Heat Warning |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Northern Park; Golden Valley; Red Lodge Foothills; Northern Big Horn; Southern Rosebud; Judith Gap; Paradise Valley; Livingston Area; Beartooth Foothills; Southern Big Horn; Southeastern Carbon; Northern Sweet Grass; Bighorn Canyon; Northern Carbon; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone; Sheridan Foothills |
| Effective: | 2026-07-11 @ 3:07 am -> 2026-07-12 @ 3:15 am |
| Onset: | 2026-07-11 @ 7:00 am -> 2026-07-14 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-11 @ 3:07 am |
| Headline: | Extreme Heat Warning issued July 11 at 2:07AM MDT until July 14 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures of 100 to 113 expected, hottest Sunday. Some all time record highs are possible on Sunday. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...From 6 AM this morning to midnight MDT Monday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Extremely 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: | Fire Weather Watch |
| 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; Southwest Carbon County; Laramie Foothills and High Plains; Laramie East High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin |
| Effective: | 2026-07-11 @ 2:33 am -> 2026-07-11 @ 7:00 pm |
| Onset: | 2026-07-11 @ 1:00 pm -> 2026-07-12 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-07-11 @ 2:33 am |
| Headline: | Fire Weather Watch issued July 11 at 1:33AM MDT until July 12 at 12:00PM MDT by NWS Cheyenne WY |
| Description: |
Fire Weather Watch for portions of Southeast Wyoming. The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon Sunday to 8 PM MDT Monday. * 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: | Red Flag Warning |
| Area(s): | North Laramie Range and Adjacent High Plains; North Laramie Valley/Shirley Basin; North Snowy Range Foothills |
| Effective: | 2026-07-11 @ 2:33 am -> 2026-07-11 @ 7:00 pm |
| Onset: | 2026-07-12 @ 1:00 pm -> 2026-07-13 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-11 @ 2:33 am |
| Headline: | Red Flag Warning issued July 11 at 1:33AM MDT until July 13 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
Fire Weather Watch for portions of Southeast Wyoming. The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon Sunday to 8 PM MDT Monday. * AFFECTED AREA...Fire weather zone 419.Fire weather zone 420.Fire weather zone 427. * WIND... Southerly winds 15 gusting 30 mph * HUMIDITY... 10 to 15 percent * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| 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; Southwest Carbon County; Laramie Foothills and High Plains; Laramie East High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin |
| Effective: | 2026-07-11 @ 2:33 am -> 2026-07-11 @ 7:00 pm |
| Onset: | 2026-07-12 @ 1:00 pm -> 2026-07-13 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-11 @ 2:33 am |
| Headline: | Red Flag Warning issued July 11 at 1:33AM MDT until July 13 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
Fire Weather Watch for portions of Southeast Wyoming. The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon Sunday to 8 PM MDT Monday. * 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: | 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: | 2026-07-11 @ 2:31 am -> 2026-07-11 @ 7:15 pm |
| Onset: | 2026-07-11 @ 1:00 pm -> 2026-07-13 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-11 @ 2:31 am |
| Headline: | Extreme Heat Warning issued July 11 at 1:31AM MDT until July 13 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Dangerously hot conditions with temperatures from 100 to 110 degrees below 6,000 feet and 90 to 100 degrees between 6,000 and 7,500 feet each day. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...From noon today to 9 PM MDT Monday. The hottest temperatures are expected on Sunday afternoon. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. |
| 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: | 2026-07-11 @ 2:06 am -> 2026-07-11 @ 7:00 pm |
| Onset: | 2026-07-11 @ 1:00 pm -> 2026-07-15 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-11 @ 2:06 am |
| Headline: | Heat Advisory issued July 11 at 1:06AM MDT until July 15 at 12:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Afternoon temperatures will be near or exceed 100 degrees with overnight temperatures between 65 to 70 providing little relief overnight * WHERE...Portions of panhandle Nebraska and east central and southeast Wyoming. * WHEN...From noon today to midnight MDT Tuesday Night. * IMPACTS...Hot temperatures and poor hydration may cause heat illnesses or injuries. |