Salt Lake City, Utah – Residents in Salt Lake City face a serious heat threat with temperatures expected to soar. The mercury will hit 101°F by Thursday afternoon. This extreme heat carries significant health risks. Prepare for dangerous conditions through Thursday night.
According to the National Weather Service (NWS) Salt Lake City, a Heat Advisory is in effect until 11:00 PM MDT on Thursday, June 19, 2025. Temperatures will reach 101°F in the Salt Lake and Tooele Valleys. A Red Flag Warning also remains active for critical fire weather conditions, especially along the I-15 corridor and throughout the western Utah mountains.
Drink plenty of fluids. Stay in air-conditioned rooms. Avoid direct sun exposure. Check on vulnerable neighbors and relatives. Outdoor work should be limited to early morning or late evening. The Occupational Safety and Health Administration (OSHA) recommends frequent breaks in cool, shaded areas. Heat stroke is an emergency.
Forecasters expect hot conditions to persist. Low humidity will also contribute to heightened fire danger. Relative humidity will fall to 5-10 percent during the day. Expect poor recovery overnight. Critical fire weather conditions could lead to rapid fire spread. Any new ignitions will pose a significant threat.
Five-Day Forecast for Salt Lake City:
- Wednesday, June 18: High: 94°F, Sunny. Low: 68°F, Mostly Clear.
- Thursday, June 19 (Juneteenth): High: 101°F, Hot. Low: 71°F, Clear.
- Friday, June 20: High: 97°F, Sunny. Low: 65°F, Clear.
- Saturday, June 21: High: 86°F, Sunny. Low: 65°F, Mostly Sunny.
- Sunday, June 22: High: 74°F, Sunny. Low: 51°F, Mostly Sunny.
