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Montana weather in September 2020
Below are average maximum temperatures at popular destinations in Montana in September. Select a destination to see more weather parameters.
The September weather guide for Montana shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
How hot is it in Montana in September?
Daytime temperatures usually reach 20°C in Helena, Montana in September, falling to 4°C at night.
How sunny is it in Montana in September?
There are normally 8 hours of bright sunshine each day in Helena, Montana in September - that's 66% of daylight hours.
Does it rain in Montana in September?
There are usually 7 days with some rain in Helena, Montana in September and the average monthly rainfall is 30mm.
Montana sunrise & sunset times for September 2020
Browse the sunrise & sunset times for Montana in September 2020. Select a month to view Montana sunrise & sunset times for the next twelve months. The Montana sunrise & sunset times shown below are for Helena.
|Date||Sunrise times||Sunset times|
|Tuesday, 1st September 2020||06:49||20:06|
|Tuesday, 15th September 2020||07:07||19:39|
|Wednesday, 30th September 2020||07:26||19:09|
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Metric (°C / mm) | Imperial (°F / inches)
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