Fort St. John weather in August 2026

Expect daytime maximum temperatures of 70°F in Fort St. John, British Columbia in August based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 2.4 inches of rainfall in the month.

  • 70°F maximum daytime temperature in August in Fort St. John70
    70°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in August in Fort St. John11
    11 days with some rainfall
  • 46°F minimum night-time temperature in August in Fort St. John46
    46°F min night temperature
  • 15 hours of daylight per day in August in Fort St. John15
    15 hours of daylight per day
  • No heat & humidity in August in Fort St. John0
    No heat & humidity
  • 2.4 inches monthly rainfall in August in Fort St. John2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Fort St. John5
    5 (Moderate) UV index

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The August 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)  |  Imperial (°F)

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How hot is it in Fort St. John in August?

Daytime temperatures usually reach 72°F in Fort St. John in August, falling to 55°F at night.

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

There are normally 8 hours of bright sunshine each day in Fort St. John in August - that's 57% of daylight hours.

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

The average sea temperature around Fort St. John in August is 63°F.

Does it rain in Fort St. John in August?

There are usually 8 days with some rain in Fort St. John in August and the average monthly rainfall is 2.0 inches.

Fort St. John August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 05:07 21:12
Sunday, 16th August 2026 05:36 20:38
Monday, 31st August 2026 06:06 20:00

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