Montana weather in May 2022

  • 18°C maximum daytime temperature in May in Montana (Helena)18
    18°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Montana (Helena)11
    11 days with some rainfall
  • 3°C minimum night-time temperature in May in Montana (Helena)3
    3°C min night temperature
  • 15 hours of daylight per day in May in Montana (Helena)15
    15 hours of daylight per day
  • No heat & humidity in May in Montana (Helena)0
    No heat & humidity
  • 51 mm monthly rainfall in May in Montana (Helena)51
    51 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Montana (Helena)7
    7 (High) UV index

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

More destinations >>

  • Search & compare the best car hire deals
  • Free 48-hour cancellation policy & no hidden charges
  • Check prices with Avis, Europcar, Sixt & more

Recommended for Montana

The May weather guide for Montana (Helena) 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.

  • Top deals & discounts
  • Montana weather overview
  • Montana climate averages by month
  • More destinations
  • Best time to go to Montana
  • Montana 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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

Back to top

More about the USA

How hot is it in Montana in May?

Daytime temperatures usually reach 18°C in Helena, Montana in May, falling to 3°C 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 51mm.

Montana May sunrise & sunset times

Browse the sunrise and sunset times for Montana in May 2022. Select a month to view Montana sunrise and sunset times for the next 12 months. The Montana sunrise and sunset times shown below are for Helena.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st May 2022 06:13 20:38
Monday, 16th May 2022 05:53 20:57
Tuesday, 31st May 2022 05:39 21:13

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.