Hamilton weather in May 2025

Expect 19°C 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.

  • 19°C maximum daytime temperature in May in Hamilton19
    19°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Hamilton11
    11 days with some rainfall
  • 3°C minimum night-time temperature in May in Hamilton3
    3°C 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
  • 44 mm monthly rainfall in May in Hamilton44
    44 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Hamilton7
    7 (High) UV index

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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 / mm)  |  Imperial (°F / inches)

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How hot is it in Hamilton in May?

Daytime temperatures usually reach 19°C in Hamilton in May, falling to 3°C 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 44mm.

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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