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 @ 3:37 pm -> 2026-07-14 @ 7:00 am
Onset: 2026-07-13 @ 3:37 pm -> 2026-07-16 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-13 @ 3:37 pm
Headline: Heat Advisory issued July 13 at 2:37PM MDT until July 16 at 9:00PM MDT by NWS Rapid City SD
Description: * WHAT...Heat index values up to 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: Red Flag Warning
Area(s): Pine Ridge/Nebraska National Forest; Box Butte/South Sioux/Niobrara River; Lower North Platte River Basin/Scottsbluff National Monument; Lodgepole Creek/Southern Nebraska Panhandle; 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 @ 2:47 pm -> 2026-07-14 @ 7:00 am
Onset: 2026-07-13 @ 2:47 pm -> 2026-07-15 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-13 @ 2:47 pm
Headline: Red Flag Warning issued July 13 at 1:47PM MDT until July 15 at 8:00PM MDT by NWS Cheyenne WY
Description: * AFFECTED AREA...Fire weather zones 417, 418, 423, and 430
through 434.

* WIND...South to southeast winds 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 @ 2:44 pm -> 2026-07-14 @ 7:00 am
Onset: 2026-07-13 @ 2:44 pm -> 2026-07-16 @ 1:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-13 @ 2:44 pm
Headline: Heat Advisory issued July 13 at 1:44PM 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): Custer; Fallon; Powder River; Carter; Southern Rosebud; Sheridan Foothills
Effective: 2026-07-13 @ 2:08 pm -> 2026-07-14 @ 2:15 pm
Onset: 2026-07-13 @ 2:08 pm -> 2026-07-16 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-13 @ 2:08 pm
Headline: Extreme Heat Warning issued July 13 at 1:08PM 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: 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 @ 12:50 pm -> 2026-07-14 @ 9:00 am
Onset: 2026-07-13 @ 12:50 pm -> 2026-07-14 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-07-13 @ 12:50 pm
Headline: Extreme Heat Warning issued July 13 at 11:50AM 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): Southwest Wyoming
Effective: 2026-07-13 @ 12:15 pm -> 2026-07-13 @ 10:00 pm
Onset: 2026-07-13 @ 12:15 pm -> 2026-07-13 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Salt Lake City UT on 2026-07-13 @ 12:15 pm
Headline: Extreme Heat Warning issued July 13 at 11:15AM MDT until July 13 at 9:00PM MDT by NWS Salt Lake City UT
Description: * WHAT...Dangerously hot conditions with temperatures up to 95
degrees expected.

* WHERE...Southwest Wyoming.

* WHEN...Until 9 PM MDT this evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.