Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Heat Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-14 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Heat Advisory issued July 13 at 3:09AM MDT until July 14 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Heat Advisory, highs today up to 96. For the Lake Wind Advisory, north winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, and Petroleum Counties. * WHEN...For the Heat Advisory, until 2 AM MDT Tuesday. For the Lake Wind Advisory, until 6 AM MDT early this morning. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Sheridan |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-14 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Heat Advisory issued July 13 at 3:09AM MDT until July 14 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Highs today in the lower 90s. . * WHERE...Sheridan County. * WHEN...Until 2 AM MDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Lake Wind Advisory |
| Area(s): | McCone |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Lake Wind Advisory issued July 13 at 3:09AM MDT until July 13 at 6:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Heat Advisory, highs today up to 96. For the Lake Wind Advisory, north winds 15 to 25 mph with gusts up to 35 mph. * WHERE...McCone County. * WHEN...For the Heat Advisory, until 2 AM MDT Tuesday. For the Lake Wind Advisory, until 6 AM MDT early this morning. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures may cause heat illnesses. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Lake Wind Advisory issued July 13 at 3:09AM MDT until July 13 at 6:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Heat Advisory, highs today up to 96. For the Lake Wind Advisory, north winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, and Petroleum Counties. * WHEN...For the Heat Advisory, until 2 AM MDT Tuesday. For the Lake Wind Advisory, until 6 AM MDT early this morning. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Daniels; Western Roosevelt; Northern Phillips; Southwest Phillips; Northern Valley |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-14 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Heat Advisory issued July 13 at 3:09AM MDT until July 14 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...High today in the lower to mid 90s. * WHERE...Daniels, Northern Phillips, Northern Valley, Southwest Phillips, and Western Roosevelt Counties. * WHEN...Until 2 AM MDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Richland; Dawson; Prairie; Wibaux; Eastern Roosevelt |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-14 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Extreme Heat Warning issued July 13 at 3:09AM MDT until July 14 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Dangerously hot conditions with highs 95 to 100. * WHERE...Dawson, Eastern Roosevelt, Prairie, Richland, and Wibaux Counties. * WHEN...Until 2 AM MDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. |
| Alert: | Heat Advisory |
| Area(s): | McCone |
| Effective: | 2026-07-13 @ 4:09 am -> 2026-07-13 @ 12:15 pm |
| Onset: | 2026-07-13 @ 4:09 am -> 2026-07-14 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-13 @ 4:09 am |
| Headline: | Heat Advisory issued July 13 at 3:09AM MDT until July 14 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Heat Advisory, highs today up to 96. For the Lake Wind Advisory, north winds 15 to 25 mph with gusts up to 35 mph. * WHERE...McCone County. * WHEN...For the Heat Advisory, until 2 AM MDT Tuesday. For the Lake Wind Advisory, until 6 AM MDT early this morning. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures may cause heat illnesses. |
| 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: | Extreme Heat Warning |
| Area(s): | Treasure; Northern Rosebud; Northern Big Horn; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northeastern Yellowstone; Southwestern Yellowstone |
| Effective: | 2026-07-13 @ 3:02 am -> 2026-07-14 @ 3:15 am |
| Onset: | 2026-07-13 @ 3:02 am -> 2026-07-15 @ 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 15 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Very hot daytime temperatures combined with warm overnight lows will produce cumulative heat stress. * WHERE...Portions of south central and southeast Montana. * WHEN...Until midnight MDT Tuesday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures of 98 to 105 today and Tuesday. Overnight lows will remain well above normal providing only limited relief. |
| Alert: | Extreme Heat Warning |
| Area(s): | Musselshell; Northern Stillwater; Northern Park; Golden Valley; Red Lodge Foothills; Judith Gap; Paradise Valley; Livingston Area; Beartooth Foothills; Northern Sweet Grass; Northern Carbon; Melville Foothills; Southern Wheatland |
| Effective: | 2026-07-13 @ 3:02 am -> 2026-07-14 @ 1:00 am |
| Onset: | 2026-07-13 @ 3:02 am -> 2026-07-14 @ 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 14 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Very hot daytime temperatures combined with warm overnight lows will produce cumulative heat stress. * WHERE...Portions of central and south central Montana. * WHEN...Until midnight MDT tonight. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very hot conditions with high temperatures of 94 to 99 today. |
| Alert: | Heat Advisory |
| Area(s): | Eastern Toole and Liberty; Hill County; Northern Blaine County; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Gates of the Mountains; Helena Valley; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley |
| Effective: | 2026-07-13 @ 2:35 am -> 2026-07-13 @ 5:15 pm |
| Onset: | 2026-07-13 @ 2:35 am -> 2026-07-13 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-13 @ 2:35 am |
| Headline: | Heat Advisory issued July 13 at 1:35AM MDT until July 13 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Hot daytime temperatures of 90 to 98 degrees, with overnight temperatures of 60 to 70 degrees. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Multiple days of hot temperatures may cause heat illnesses and cumulative heat stress. |