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: 2026-07-18 @ 2:23 am -> 2026-07-18 @ 5:30 pm
Onset: 2026-07-18 @ 2:23 am -> 2026-07-19 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-18 @ 2:23 am
Headline: Heat Advisory issued July 18 at 1:23AM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Description: * WHAT...Peak afternoon heat index values of 95 to 105, hottest for
Sunday afternoon.

* WHERE...Portions of northwestern, south central, and southwestern
South Dakota and northeast Wyoming.

* WHEN...Until 9 PM MDT /10 PM CDT/ Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Alert: Heat Advisory
Area(s): Box Butte; Scotts Bluff; Banner; Morrill; South Sioux; Converse County Lower Elevations; Niobrara County; Goshen County
Effective: 2026-07-18 @ 12:53 am -> 2026-07-18 @ 7:00 pm
Onset: 2026-07-19 @ 1:00 pm -> 2026-07-20 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-18 @ 12:53 am
Headline: Heat Advisory issued July 17 at 11:53PM MDT until July 20 at 6:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Afternoon temperatures in the upper 90's to low 100's with
overnight lows in the mid 60's to low 70's.

* WHERE...In Nebraska, Banner County, Box Butte County, Morrill
County, Scotts Bluff County, and Southern Sioux County. In
Wyoming, Converse County Lower Elevations, Niobrara County, and
Goshen County.

* WHEN...From noon Sunday to 6 PM MDT Monday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.