Mild
Average highs are around 21°C, so days are mild rather than hot.
September verdict
Missoula, Montana, United States in September
Weather score53Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 8.6h per day, so bright days are a strong part of the month. Rainfall averages 30mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
21°C
Rain
30mm
Sun
8.6h
Weather score
53
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 30mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.6h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Missoula, Montana, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September21°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September30mm average rain
September is close to Missoula's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
September8.6 hours average sun
September sits close to Missoula's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September53 weather score
September sits close to Missoula's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
