Montana weather in May 2021

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Below are average maximum temperatures at popular destinations in Montana in May. Select a destination to see more weather parameters.

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The May 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.

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How hot is it in Montana in May?

Daytime temperatures usually reach 64°F in Helena, Montana in May, falling to 37°F at night.

How sunny is it in Montana in May?

There are normally 9 hours of bright sunshine each day in Helena, Montana in May - that's 60% of daylight hours.

Does it rain in Montana in May?

There are usually 11 days with some rain in Helena, Montana in May and the average monthly rainfall is 2.0 inches.

Montana sunrise & sunset times for May 2021

Browse the sunrise & sunset times for Montana in May 2021. 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
Saturday, 1st May 2021 06:13 20:38
Sunday, 16th May 2021 05:52 20:57
Monday, 31st May 2021 05:39 21:13
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Metric (°C)  |  Imperial (°F)

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