SALT LAKE CITY — Get your air conditioners ready because the triple-digital heat is returning to Utah with vigor by the end of the weekend.
Lows Friday reached the 30s and 40s across Utah, resulting in some patchy frost, but the cooldown caused by a cold front passing through Utah on Thursday was brief. KSL meteorologist Grant Weyman points out that there is a storm system moving east from the Pacific Coast but a high-pressure system will set up over Utah, pushing the storm north and away from the state.
In a double-whammy, the high-pressure system will then cause temperatures to heat up during the weekend and then into the ensuing week. The upcoming forecast calls for high temperatures to come close to or exceed 100 degrees from Logan to St. George starting this weekend and then well into next week.
"(Saturday) won't be too bad, but Sunday's heat, you will really start to notice it," Weyman said.
The National Weather Service forecast calls for a high of 100 degrees for Sunday and highs remaining in the triple digits through at least Thursday, possibly topping out at 105 degrees along the way near its official station by the Salt Lake City International Airport.
The agency also lists the high for other parts of the Wasatch Front higher than that, including Provo at 104 degrees and Farmington at 105 degrees Tuesday. Weather service officials also tweeted Thursday that their models indicate a small but relatively decent chance — about 16% overall — that the incoming heat wave could tie the all-time heat record in Salt Lake City's history on Tuesday.
⚠️ Prolonged Heat Wave Next Week ⚠️— NWS Salt Lake City (@NWSSaltLakeCity) June 11, 2021
A prolonged heat wave is expected next week, with high temperatures regularly around 100-105 at Salt Lake City, and 110-114 in St George. Heat watches and warnings in effect Monday through Friday. #utwx#wyxxpic.twitter.com/8ys9rMnsTB
The hottest temperature ever recorded in Salt Lake City's official 147-year-old record book, for inquiring minds, remains 107 degrees. It was recorded twice: first on July 26, 1960, and again a few decades later, on July 13, 2002. The last challenger to the record was an August 2020 heat wave, resulting in back-to-back 105-degree days to start the month.
Elsewhere, Logan's forecast calls for highs to flirt with triple digits before reaching as high as 101 degrees Tuesday. Those highs will remain in place well into next week, as well.
Highs are expected to return to triple digits in St. George by Saturday before it nears 115 degrees next week. The weather forecast calls for a high of 114 degrees on Wednesday. St. George's all-time record is 117 degrees, which was set on July 5, 1985.
In Cedar City, located in the higher-elevated parts of southwest Utah, it won't be as hot, but still hot. The forecast lists highs that top at in the upper 90s next week. Moab, in southeast Utah, has forecasted highs nearing 110 degrees beginning Tuesday and continuing through the end of the week.
The forecast is likely to result in more excessive heat warnings for Utah, such as ones issued at the start of the month for an earlier heat wave. The National Weather Service also tweeted that it's important to monitor the forecast and "consider altering your plans" for anyone planning to be outdoors during the heat of the day beginning Sunday and into next week.
Enjoy the cooldown today because starting as early as Sunday...Excessive Heat Conditions are expected to arrive. Record Breaking High Temperatures are forecast across Cntl and S UT and are possible across N UT. Do what you can now and remember these tips! #utwxpic.twitter.com/lujacOFpBq— NWS Salt Lake City (@NWSSaltLakeCity) June 10, 2021
In addition to moving outdoor plans away from anything between 11 a.m. and 6 p.m., the weather service recommends that people should bring their pets inside and provide them enough drinking water and also to check on elderly, sick or homeless people who are most vulnerable to complications from the heat.
Full forecasts for areas across Utah can be found at the KSL Weather Center.