Galena weather in May 2025

Expect daytime maximum temperatures of 21°C in Galena in May based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 98 mm of rainfall in the month.

  • 21°C maximum daytime temperature in May in Galena21
    21°C max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in May in Galena11
    11 days with some rainfall
  • 9°C minimum night-time temperature in May in Galena9
    9°C min night temperature
  • 15 hours of daylight per day in May in Galena15
    15 hours of daylight per day
  • No heat & humidity in May in Galena0
    No heat & humidity
  • 98 mm monthly rainfall in May in Galena98
    98 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Galena7
    7 (High) UV index

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The May weather guide for Illinois (Galena) 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 Galena in May?

Daytime temperatures usually reach 21°C in Galena in May, falling to 9°C at night.

How sunny is it in Galena in May?

There are normally 10 hours of bright sunshine each day in Galena in May - that's 67% of daylight hours.

Does it rain in Galena in May?

There are usually 11 days with some rain in Galena in May and the average monthly rainfall is 98mm.

Galena May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:56 19:02
Friday, 16th May 2025 04:39 19:18
Saturday, 31st May 2025 04:28 19:32

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