Daytime highs reached into the 90s in western Montana on Monday and temperatures could hit 105 in the Bitterroot and Missoula valleys this week.
The National Weather Service (NWS) issued a heat advisory for the Bitterroot, Missoula, Flathead and Mission valleys, the Kootenai/Cabinet region and lower Clark Fork River region that will go into effect at 1 p.m. on Tuesday, July 9 and is expected to last through midnight on Friday. Hot temperatures, in the 90s and 100s, are expected through this upcoming weekend.
The hottest temperatures are expected Tuesday through Thursday, when western Montana could see highs up to 105 degrees, according to NWS reports. Temperatures in southwest Montana are expected to be in the mid-90s, while central Idaho valleys could see temperatures between 105-112 degrees Fahrenheit.
āWe’re not really going to be breaking records in the Bitterroot Valley or Missoula,ā NWS meteorologist Joe Messina said on Monday. āIt’s the prolonged nature of this heat wave that we’re worried aboutā¦ People should be prepared, not just for hot days, but prolonged hot days.ā
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Starting Tuesday, the temperature in the Missoula area is predicted to be at or above 95 degrees for the next seven days. That would tie the eighth-longest number of consecutive days greater than or equal to 95 degrees in the Missoula area, a record set in 1948. The record for the longest number of consecutive days with a high temperature greater than or equal to 95 degrees recorded in Missoula is 12 days, set in 1960.
Nighttime lows are expected to offer some reprieve from the heat, with temperatures dipping into 60s.