An Extreme Heat Warning is in effect for large portions of northern, central, and southern Utah starting Saturday at noon. The National Weather Service in Salt Lake City warned that a strong high-pressure system building over the region could bring dangerously hot temperatures capable of challenging daily and monthly records.
For much of northern and central Utah, including the Wasatch Front, Cache Valley, Salt Lake Valley, Utah Valley, Wasatch Back, Uinta Basin, Castle Country, and San Rafael Swell, the warning remains in effect until 6 a.m. Tuesday. Forecasters stated that valley temperatures could reach 105 degrees, while many mountain valleys are expected to approach 100 degrees.
The warning encompasses several communities including Salt Lake City, Ogden, Provo, Logan, Tooele, Park City, Heber City, Roosevelt, Price, Richfield, and Green River. Forecasters noted that overnight lows in the lower to mid-70s are expected to provide little relief from the heat.
A separate Extreme Heat Warning has been issued for portions of southern Utah from noon Saturday until 6 a.m. Monday. This includes western Millard and Juab counties, southwest and south-central Utah, Capitol Reef National Park and vicinity, western Canyonlands, and Glen Canyon National Recreation Area, including Lake Powell.
In these areas, the National Weather Service expects highs around 100 degrees across most central and southern Utah valleys, with temperatures reaching 110 degrees in lower Washington County and the Glen Canyon Recreation Area. Overnight lows in lower Washington County could potentially reach the lower 80s.
The National Weather Service stated that prolonged heat and limited overnight cooling will significantly increase the risk of heat-related illnesses. Officials urge residents to drink plenty of fluids, stay in air-conditioned buildings when possible, avoid prolonged exposure to direct sunlight, and check on vulnerable individuals such as older adults and neighbors.
Residents are reminded never to leave children or pets unattended in vehicles. For those working or exercising outdoors, the weather service recommends wearing lightweight, loose-fitting clothing, scheduling strenuous activities during early morning or evening hours, and taking frequent breaks in shaded or air-conditioned areas. The NWS advised that anyone experiencing heat stroke should be treated as a medical emergency and 911 should be called immediately.
