A massive high pressure system situated over the western United States is leading record high temperatures throughout western Montana.

Meteorologist Bob Nestor with the National Weather Service Office in Missoula said late Tuesday afternoon that several communities had broken the century mark or gone even higher.

"So far, only one community has actually broken their high temperature record today, and that's Stevensville," Nestor said. "They got up to 102 degrees today, while their old record was 100 set in 2003. Other sites have tied the record for the day. Trout Creek recorded a high of 101, St. Regis hit 100 and West Glacier had a high of 94 degrees."

Nestor said these were preliminary high temperatures, because the hours between 4 p.m. and 6 p.m. are usually the hottest of the day, so temperatures could end up even higher.

Nestor said temperatures will remain hot for the rest of the week, although Tuesday will go down as the hottest day.

"Today should be the hottest day of the week, so expect temperatures to be about five degrees cooler through the weekend, but still in the upper 80's to low 90's," Nestor said. "That's still well above normal for this time of year."

Meteorologist Bob Nestor