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An extreme heat wave is expected in eastern Idaho this week
An extreme heat wave is expected in eastern Idaho this week

IDAHO FALLS – The summer in eastern Idaho has been quite mild so far, but it will soon be really hot.

The National Weather Service in Pocatello is forecasting a heat wave across eastern Idaho this week, with the worst impacts being felt from Wednesday through Saturday.

Meteorologist John Keyes told EastIdahoNews.com that forecast temperatures will be slightly above average for this time of year, and some areas could reach record highs.

“Throughout the region, unless you’re at higher elevations, temperatures are generally between 95 and 105 degrees. It fluctuates a little bit every day,” Keyes says.

And Keyes says temperatures are unlikely to recover overnight, meaning nighttime temperatures could be a little higher than usual. Keyes is watching for a pattern between 18 and 20 degrees Celsius.

In Pocatello, daytime highs are expected to be between 37 and 40 degrees. In Idaho Falls, temperatures are expected to be between 35 and 39 degrees. In Rexburg, temperatures will be the lowest at 35 to 38 degrees.

The absolute temperature record for Idaho Falls is 102 degrees and was set on June 25, 1988. The absolute temperature record for Pocatello is 104 degrees and was set on July 31, 2020.

No data is available for Rexburg.

“This site has not been around long enough to be considered a climate site, so we don’t have any records for Rexburg,” Keyes explains.

Boise and other parts of the state will also be affected by the heat wave. For the Boise area, Keyes says the heat will be felt most intensely on Tuesday, with daytime highs ranging between 103 and 108 through Sunday.

The general temperature range in the Twin Falls area will be around 98 to 102 degrees throughout the week.

The highest temperature ever recorded in Boise was 111 degrees on July 12, 1898, according to the Idaho Statesman. Meteorologists in that area of ​​the state say there’s a 45 percent chance Boise could match the record, and a 30 percent chance it could beat it.

The heat wave is the result of a high pressure area that has formed over the western United States, Keyes says.

Keyes goes on to offer some safety tips, reminding people not to spend too much time in the sun during the hottest part of the day and to check on people who don’t have access to air conditioning.

“Make sure your pets are hydrated and out of the heat, too. They are just as vulnerable as we are,” says Keyes. “Make sure they are hydrated and stay cool. As soon as you feel sick in these conditions, get out of the heat.”

A full seven-day forecast can be found here.

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By Everly