Hamilton weather in May 2025

Expect 66°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Hamilton in May. Check more long-term weather averages for Hamilton in May before you book your next holiday to Montana in 2025/2026.

  • 66°F maximum daytime temperature in May in Hamilton66
    66°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Hamilton11
    11 days with some rainfall
  • 37°F minimum night-time temperature in May in Hamilton37
    37°F min night temperature
  • 15 hours of daylight per day in May in Hamilton15
    15 hours of daylight per day
  • No heat & humidity in May in Hamilton0
    No heat & humidity
  • 1.7 inches monthly rainfall in May in Hamilton1.7
    1.7 inches of monthly rainfall
  • UV (maximum) index 7 (High) in May in Hamilton7
    7 (High) UV index

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Recommended for Montana

  • Kids stay & eat for free at Marriot Bonvoy
  • Destinations include Europe, Middle East & Africa
  • Valid for up to 2 adults & 2 kids aged up to 12

The May weather guide for Montana (Hamilton) 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.

Metric (°C)  |  Imperial (°F)

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How hot is it in Hamilton in May?

Daytime temperatures usually reach 66°F in Hamilton in May, falling to 37°F at night.

How sunny is it in Hamilton in May?

There are normally 9 hours of bright sunshine each day in Hamilton in May - that's 61% of daylight hours.

Does it rain in Hamilton in May?

There are usually 11 days with some rain in Hamilton in May and the average monthly rainfall is 1.7 inches.

Hamilton May sunrise & sunset times

Browse the sunrise and sunset times for Hamilton in May 2025. Select a month to view Hamilton sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:22 19:46
Friday, 16th May 2025 05:02 20:05
Saturday, 31st May 2025 04:49 20:20

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