Great Falls weather averages

Going to Great Falls? Find the best month to visit Great Falls based on the weather.

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Check Great Falls weather averages before you book your next holiday in 2019/2020. Today's maximum temperature in Great Falls is expected to be 16°C, while the average maximum temperature in June is 23°C.

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More about Great Falls

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The weather for Great Falls, Montana shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Great Falls weather averages: best month

Great Falls Best month Averages
Warmest July & August 28°C
Sunniest July 12 hours per day
Least rain October 5 days

Great Falls climate guide

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Great Falls weather averages by month

Check Great Falls holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Great Falls weather with the USA

Below the Great Falls weather chart shows maximum daytime temperature for Great Falls, Montana, USA and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Great Falls, Montana, USA
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

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More Montana destinations

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