Cloud cover has killed chances for thunderstorm development for the most part Monday evening. Expect mostly cloudy skies around Southwest Montana. Lows will drop into the 50s and upper 40s overnight.
More clouds and isolated thunderstorms south of Bozeman are in store for Southwest Montana tomorrow. Expect mostly sunny skies near Missoula and Kalispell with temperatures in the low to mid 90s west of the divide. Areas near Libby will reach the upper 90s. Temperatures will crest in the mid to upper 80s in Southwest Montana.
Wednesday will continue a wind reversal starting on Tuesday which will push most moisture back towards the Southwest United States. There will be an elevated chance for thunderstorms around Butte as another system approaches from Oregon. Thursday and Friday will see increased storm chances region-wide as that weak low pressure system moves overhead.
In all cases, the thunder threat will be isolated with not much in the way of lightning or rain this week. Temperatures late in the week will be in the upper 80s and low 90s.