Missoula, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Missoula, a city in Missoula County, Montana.
Live forecast is briefly unavailable; the local growing information below is from NOAA climate normals.
Growing snapshot for Missoula
Last spring frost
May 10
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
5b
More local growing data for Missoula: nearby ZIP 59801 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Alberton
Arlee
Bonner-West Riverside
Condon
Cyr
East Missoula
Evaro
Frenchtown
Huson
Lolo
Orchard Homes
Piltzville
Potomac
Seeley Lake
Turah
Twin Creeks
Wye
Climate data from the nearest NOAA station, Missoula 2 Ne, Mt (3.6 mi from Missoula). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.