Missoula (MT) Temperature by Month
Missoula in Montana, United States of America sees significant seasonal temperature differences, with daytime highs between 0°C (32°F) in December and 30°C (86°F) in July, averaging 14°C (57°F) annually. Explore the full monthly breakdown below.
Missoula Monthly Temperatures
Depending on the time of the year, temperatures range from warm to very cold in Missoula. Nighttime lows follow the same pattern, ranging from 11°C (52°F) to -8°C (18°F).
The chart below illustrates the average maximum day and minimum night temperatures in Missoula by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Missoula vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
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moderate
cold
very cold
Missoula vs World: Temperature Compared
Missoula's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Missoula this rarely lasts long on the ground.
For more on Missoula's weather — including monthly rainfall, sunshine hours, and humidity — visit our Missoula climate page.
