Fort St. John weather in May 2026

Expect daytime maximum temperatures of 16°C in Fort St. John, British Columbia in May based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 47 mm of rainfall in the month.

  • 16°C maximum daytime temperature in May in Fort St. John16
    16°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in May in Fort St. John9
    9 days with some rainfall
  • 3°C minimum night-time temperature in May in Fort St. John3
    3°C min night temperature
  • 16 hours of daylight per day in May in Fort St. John16
    16 hours of daylight per day
  • No heat & humidity in May in Fort St. John0
    No heat & humidity
  • 47 mm monthly rainfall in May in Fort St. John47
    47 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Fort St. John5
    5 (Moderate) UV index

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The May weather guide for British Columbia (Fort St. John) 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 warm is it in Fort St. John in May?

Daytime temperatures usually reach 17°C in Fort St. John in May, falling to 8°C at night.

How sunny is it in Fort St. John in May?

There are normally 7 hours of bright sunshine each day in Fort St. John in May - that's 47% of daylight hours.

How warm is the sea around Fort St. John in May?

The average sea temperature around Fort St. John in May is 12°C.

Does it rain in Fort St. John in May?

There are usually 11 days with some rain in Fort St. John in May and the average monthly rainfall is 73mm.

Fort St. John May sunrise & sunset times

Browse the sunrise and sunset times for Fort St. John in May 2026. Select a month to view Fort St. John sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:18 20:45
Saturday, 16th May 2026 04:47 21:14
Sunday, 31st May 2026 04:25 21:39

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