Reset Map, or Add PWS. You can jump to a separate table for each region of the state: Northwestern, Southwestern, South - Central and Eastern Montana. Montana mornings are cool and crisp in September but warm quickly as the sun comes up over the mountains and warms the valley floor. Meanwhile, rain on the storm’s warmer side helped clinch top spots for the wettest September on record for parts of eastern Montana. Does it rain in Missoula in September? The National Weather Service in Missoula reports that the overnight snowfall has broken the all-time September snowfall record. In Missoula, there are 4 comfortable months with high temperatures in the range of 70-85°. 32 ° 16 ° 6. Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers. Find what to do today, this weekend, or in December. September snow in several states, severe weather across the country Sept. 29, 2019 01:27 Sept. 29, 2019, 10:00 PM UTC / Updated Sept. 30, 2019, 12:54 AM UTC Averages are for Missoula International Airport, which is 6 miles from Missoula. Things to Do in Missoula, Montana: See Tripadvisor's 3,991 traveler reviews and photos of Missoula tourist attractions. 38 ° 19 ° 30. Missoula City-County Health Department -quality">Air Quality Specialist Sarah Coefield offers this advice to western Montanans. Read below for more weather and travel details. Missoula, MT Weather Calendar star_ratehome. The best times to visit Missoula for ideal weather are. How sunny is it in Missoula in September? Most people are reluctant to come to Montana in October because of the weather. Get AccuWeather alerts as they happen with our browser notifications. 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Missoula rafting in September is wonderful. Report inappropriate content. Monthly: 1981-2010 normals History: 2007-2019 Below are average maximum temperatures at popular destinations in Montana in September. Major Winter Storm Impacting the Northeast and Mid Atlantic. Showing: All Year January February March April May June July August September October November December Get your telescope: Planets to shine like ‘Christmas star’, AccuWeather 2020 white Christmas watch: Suit up, Santa Claus, Plowing incident leaves man trapped in feet of snow, Dozens of vehicles stuck on snow-covered highway, Podcast: Mischief and mayhem for Christmas week. Temperatures in the 90s Fahrenheit are mainly confined to July and August, with a day or two in June and September. Based on weather reports collected during 1985–2015. The best window for great fall fly fishing in Missoula is the last half of September to the 2-3rd week in October. Station Data. 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