Salt Lake City is waking up to clear skies Friday, but the valley is headed for another round of triple-digit heat before thunderstorms return. High temperatures are expected to reach about 101 degrees, while overnight lows remain in the 70s and offer limited relief. A Heat Advisory remains in effect through early Saturday morning.
Triple-Digit Heat Arrives Friday
Friday, August 21, will stay mostly sunny through the early afternoon, with temperatures climbing toward 100 degrees by midafternoon and south-southeast winds around 7 mph. The National Weather Service says the hottest stretch will arrive before storm chances increase later in the day.
The advisory runs until 7 a.m. Saturday, August 22, covering the Salt Lake Valley and much of the Wasatch Front. Friday night will only cool to around 72 degrees, so people without reliable air conditioning may have a harder time recovering from the heat. Drink plenty of water, seek shade or air conditioning, and save strenuous outdoor work for the morning or evening.
Storm Chances Rise After 3 P.M.
Isolated showers and thunderstorms could develop after 3 p.m. Friday, with about a 20% chance of precipitation in the valley. Storm coverage is expected to become more widespread Friday night, when the chance rises to about 30%, and temperatures fall only to the low 70s.
Monsoonal moisture moving into Utah will keep storms in the forecast through at least early next week. Downpours could be briefly heavy, with lightning, sudden gusts, and localized flash-flooding concerns, especially near higher terrain, normally dry washes, and other low-lying areas.
Weekend Heat Eases But Storm Risk Lingers
Saturday, August 22, should reach about 97 degrees with mostly sunny skies before isolated storms develop after noon. Scattered showers and thunderstorms remain possible Saturday night, with a low near 71 degrees.
Temperatures ease into the mid-90s Sunday and Monday, with highs near 95 and 94 degrees, then dip to around 93 Tuesday before edging back toward 95 Wednesday and 94 Thursday. The storm threat becomes smaller later in the week, but anyone hiking, camping, or traveling through the mountains should still check the forecast and move to shelter if thunderstorms build.
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