New Hampshire’s hot spell will continue through the week, with temperatures expected to hit the 90s and little relief in sight.
Highs Monday and Tuesday are expected in the upper-80s, then break into the 90s on Wednesday, said James Brown, a meteorologist with the National Weather Service in Gray, Maine.
Brown said a high-pressure ridge extending from the Midwest to the mid-Atlantic Coast could lead to heat advisories and possibly break records before it passes.
“This ridge is holding over us pretty good. That’s the reason it’s hot. We’ve got a west-to-southwest flow throughout the entire period,” Brown said Sunday. “The heat is coming from that area. It’s coming up out of the the Plains up into New England.”
The ridge is expected to break up slightly on Tuesday, but re-establish itself and continue going strong through the rest of the week, Brown said. Overnight lows in some areas won’t fall below 70.
Highs Wednesday are forecasted in the 90s and could approach local records, Brown said. The record for Concord on July 17 was 97, set in 1999. In addition to the heat, dewpoints are expected in the 60s and 70s and the humidity will make it feel even hotter.
“That’s probably going to be the case right through early next week,” Brown said.
Scattered thunderstorms and showers are expected later in the week, but will do little to cool off the sweltering temperatures.
“Stay hydrated and if you can avoid it, don’t go out in the hottest part of the day,” Brown said.