Montana weather averages

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

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Check Montana weather averages before you book your next holiday in 2018/2019. Today's maximum temperature in Montana is expected to be 1°C, while the average maximum temperature in December is 0°C. The holiday weather guide shown above is for Helena.

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More about Montana

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The weather for Montana, represented by Helena, 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)

Montana weather averages: best month

Montana Best month Averages
Warmest July & August 28°C
Sunniest July 12 hours per day
Least rain October 6 days

Montana climate guide

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Montana weather averages by month

Check Montana 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 Montana weather with the USA

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

Maximum daytime temperature (°C)

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

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More Montana destinations

All Montana destinations >>

All destinations (A to Z)

Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

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