A surge of moisture is moving through western Montana through Friday evening. Isolated showers and storms will develop, producing lightning, localized gusty winds and brief heavy rainfall. Outside of the rain, skies will be partly cloudy through Friday night and this weekend. Isolated showers and storms are again possible Saturday afternoon and to a less extent Sunday afternoon.
Lows in the upper 40s to around 50 in Butte to the 50s in Missoula, Bozeman and Kalispell. Highs in the 80s in Bozeman, Butte and Kalispell to the lower 90s in the Missoula area.