Salt Lake City reached a daily high of 98°F on July 10, 2024, marking the hottest temperature recorded in the city so far this year. While this peak sits significantly below the historical record of 107°F set in 2021, the National Weather Service (NWS) continues to monitor a persistent high-pressure ridge over the Great Basin that is driving temperatures well above seasonal averages.
How Current Temperatures Compare to Historical Records
The high of 98°F recorded at the Salt Lake City International Airport remains below the extreme heat events observed in recent years. According to the National Weather Service Salt Lake City office, the city’s all-time record high sits at 107°F, a mark reached multiple times, most recently in July 2021.
While current conditions are sweltering, they have not yet reached the sustained “heat dome” intensity seen during the summer of 2023, when the city experienced a prolonged stretch of triple-digit days. Meteorologists attribute the current spike to a stagnant air mass trapping heat across the Intermountain West, limiting the typical cooling effect provided by mountain breezes during the evening hours.
Why High-Pressure Systems Drive Heat in Utah
The primary driver of this week’s heat is a “ridge of high pressure,” a meteorological phenomenon that acts as a lid on the atmosphere. As explained by the National Oceanic and Atmospheric Administration (NOAA), these ridges force air to sink, which compresses and warms the atmosphere as it nears the ground.
In Salt Lake City, this effect is often compounded by the valley’s topography. The surrounding Wasatch and Oquirrh mountains can restrict airflow, preventing cooler air from displacing the heat trapped in the basin. This creates a feedback loop where the ground absorbs solar radiation during the day and radiates it back into the air, keeping overnight lows elevated and preventing the city from cooling down efficiently.
Health Precautions During Excessive Heat
Public health officials advise residents to take precautions as temperatures remain in the mid-to-high 90s. The Centers for Disease Control and Prevention (CDC) recommends the following steps to mitigate heat-related illness:
- Hydration: Drink fluids consistently throughout the day, even if you do not feel thirsty.
- Timing: Limit strenuous outdoor activities to the early morning or late evening hours to avoid the peak solar intensity between 12:00 p.m. and 6:00 p.m.
- Monitoring: Watch for signs of heat exhaustion, including heavy sweating, weakness, dizziness, and nausea.
- Environment: Utilize air conditioning or seek out designated cooling centers if your home temperature becomes unsafe.
Forecast Outlook for the Coming Week
The NWS climate prediction models indicate that the high-pressure ridge will begin to shift slightly by the weekend, potentially allowing for a minor influx of moisture. While this may bring a marginal decrease in temperature, forecasters warn that it could also increase humidity levels, which may make the heat feel more oppressive. Residents should monitor the NWS Salt Lake City dashboard for real-time updates on potential heat advisories or excessive heat warnings as the weather pattern evolves.