Another heat wave: More record-breaking heat is coming to Boise this week. Here’s how hot
Temperatures dipped to as low as 53 degrees in the Treasure Valley on Sunday morning. It was the coldest it’s been in the Boise area in over two months, and you’d be forgiven for pulling the hoodies and fuzzy socks out of storage.
But pump the breaks.
We’re about to delve into another heat wave with no end in sight, said Stephen Parker, a senior meteorologist at the National Weather Service in Boise. The Weather Service forecasts temperatures will hit 100 degrees on Tuesday, high temperatures will remain above 100 through Friday, and then stay in the 90s through the weekend.
The Weather Service issued a heat advisory on Monday, starting from 6 a.m. Tuesday to midnight on Friday. The advisory warned that temperatures could reach 104 degrees and that hot temperatures may cause heat-related illnesses.
“It looks like the heat is going to last into the first full week of September with temperatures in the upper 90s to near 100,” Parker told the Idaho Statesman on Monday. “The heat wave does not show any signs of breaking at this point.”
If temperatures hit 100 degrees every day from Tuesday to Friday, it’ll extend Boise’s ever-growing record for the most 100-plus degree days in a calendar year to 26 days. Boise broke its previous record of 20, set in 2003, earlier this month.
The heat wave results from a high-pressure ridge over the Pacific Northwest that will keep the temperatures high and air dry for the foreseeable future. It’s going to be so hot in Boise that two daily weather records will likely be broken.
Wednesday’s temperature is forecast to be 103 degrees, which will eclipse the record for the high temp on Aug. 31 of 102, which was set in 2004. It’ll again hit 103 on Thursday, outdoing the record for Sept. 2 of 101 degrees, set in 1950.
Parker said there is a “pretty good chance” that the record is broken on both days.
The average high temperature for late August into September is 85 to 86 degrees.
This story was originally published August 29, 2022 at 2:32 PM.
