Montana weather in September
Considering a trip to Montana this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:
What is the weather like in Montana in September?
Montana is a region in the United States of America. September in Montana generally has temperatures that range from pleasant to warm, with precipitation levels ranging from low to moderate.
Based on our climate data spanning from 1990-2020, the average maximum temperature is pleasant in Big Sky at 19°C to warm in Hardin at 27°C. Nighttime temperatures generally drop to 8°C in Hardin and 3°C in Big Sky.
In September, precipitation varies across different areas. From low rainfall in Hamilton with an average of 24 mm to moderate rainfall in Big Sky with 46 mm.
For a closer look at September's conditions in Montana, see the map below. For a more detailed look at Montana's yearly weather, check out our Montana climate page.
Where to go in Montana in September
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Popular destinations in Montana
What is the weather like in September for the 5 most popular destinations in Montana?
Average weather in Whitefish
In September Whitefish generally has pleasant temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Billings
In September Billings generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 8°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Great Falls
In September Great Falls generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Helena
In September Helena generally has high temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 6°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Red Lodge
In September Red Lodge generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Is your destination not in the list? Have a look at other destinations in Montana, in the United States of America.
Is September the best time to visit Montana?
We believe that September is one of the best times to visit Montana with overall perfect weather in Whitefish. It's worth noting that weather conditions might differ depending on the location you visit.
Generally speaking, the best visiting conditions can be found in June, July, August and September offering mostly perfect weather in Whitefish. The weather in January, February, March, November and December, on the other hand, tends to be poor.
Interested in more climate information?
We have much more information about the climate in Montana.
Interested in the weather conditions in a specific month? Select the month below.
Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.