Since Fort St. John is located in the upper north prairies of the Peace River, it experiences close to a subarctic climate, with very cold winters and warm summers. In the winter, temperatures lower to around -15°C and rise to around 21°C in the summer.
The city of Fort St. John is one of the sunniest places in British Columbia, particularly in the spring and winter. The city holds the record for the most sunshine in the province in May (373.5 hours in 1972), March (247.4 hours in 1965), and November (141.3 hours in 1976).
Monthly Climate History
(Click on the month’s below to get detailed information on Fort St. John weather for that particular month)
January
February
March
April
May
June
July
August
September
October
November
December
January:
Temperature: A new year has arrived! However, that does not mean the Fort St. John does is not experiencing winter weather. You can expect to have highs around -9° and lows around -18°C.
Humidity: The humidity during January decreases and is around 72%.
Precipitation: There may be days where you see rain or drizzle or snow during the month of January. It has been recorded to see 27mm of precipitation which increases a little compared to December.
Wind: The average wind speed that you may receive is around 13km/h.
Fog: In January you may experience days that have fog.
February:
Temperature: During the month of February the weather tends to get a little warmer. You can expect to have highs around -7° and lows around -15°C.
Humidity: The humidity during February decreases and is around 70%.
Precipitation: There may be days where you see rain or drizzle during the month of February. It has been recorded to see 21mm of precipitation which increases a little compared to January.
Wind: The average wind speed that you may receive is around 13km/h.
Fog: In February you may experience days that have fog but is minimum.
March:
Temperature: March is when we start feeling spring arriving around the corner since or seasonal allergies start to act up. You can expect to have highs around 0° and lows around -9°C.
Humidity: The humidity during March decreases and is around 65%.
Precipitation: There may be days where you see rain or drizzle during the month of March. It has been recorded to see 22mm of precipitation which increases a little compared to February.
Wind: The average wind speed that you may receive is around 14km/h.
Fog: In March you may experience days that have fog but is minimum.
April:
Temperature: Throughout the month of April the temperatures are manageable. All you need is a light coat and maybe an umbrella. The temperatures generally reach highs around 8 C and reaches low’s around -1 C.
Humidity: The average humidity gets around 55%.
Precipitation: The average amount of rain Fort St. John receives is recorded to be around 26mm. You can expect to see rain or drizzle throughout the month of April.
Wind: The average wind speed that the city may receive is around 14km/h.
Fog: In April you may experience days that have fog but its minimum.
May:
Temperature: Throughout the month of May the weather tends to get a little warmer. With highs around 16°C and at the night around 3°C.
Humidity: The humidity during May also decreases being around 53%.
Precipitation: There may be some drizzle during the month of May with around 37mm of rain fall.
Wind: The average wind speed that you may receive is around 14km/h.
Fog: In May you may experience days that have fog but its minimum.
June:
Temperature: During the month of June it starts to feel a little bit more like summer and less of spring. There is high of around 19°C and lows of 8°C.
Humidity: The humidity during June increases and is around 61%.
Precipitation: There may be a slight chance of drizzle during the month of June. It has been recorded to 63mm of precipitation.
Wind: The average wind speed that you may receive is around 13km/h.
Fog: In June you may experience days that have fog but its minimum.
July:
Temperature: July tends to get a lot warmer with highs around 22° and lows around 10°C.
Humidity: The humidity during July increases around is around 65%.
Precipitation: There may be a slight chance of drizzle during the month of June. It has been recorded to 86mm of precipitation.
Wind: The average wind speed that you may receive is around 12km/h.
Fog: In July you may experience days that have fog but its minimum.
August:
Temperature: August tends to get a little cooler with highs around 20° and lows around 9°C.
Humidity: The humidity during August increases is around 67%.
Precipitation: There may be a slight chance of drizzle during the month of June. It has been recorded to 63mm of precipitation which decreases a little compared to July.
Wind: The average wind speed that you may receive is around 11km/h.
Fog: In August you may experience days that have fog but its minimum.
September:
Temperature: September is when you start to see the summer season slowly coming to an end. It tends to get a little cooler with highs around 15° and lows around 5°C.
Humidity: The humidity during September decreases and is around 66%.
Precipitation: There may be a slight chance of drizzle during the month of September. It has been recorded to 47mm of precipitation which decreases a little compared to August.
Wind: The average wind speed that you may receive is around 13km/h.
Fog: In September you may experience days that have fog but its minimum.
October:
Temperature: October is when we start seeing colors change around us but so does the temperatures. You can expect to have highs around 9° and lows around -1°C.
Humidity: The humidity during October increases and is around 66%.
Precipitation: There may be days where you see rain or drizzle during the month of October. It has been recorded to 27mm of precipitation which decreases a little compared to September.
Wind: The average wind speed that you may receive is around 9km/h.
Fog: In October you may experience days that have fog but its minimum.
November:
Temperature: November is the type of month where you can really feel that winter is around the corner. You can expect to have highs around -2° and lows around -10°C.
Humidity: The humidity during November increases and is around 76%.
Precipitation: There may be days where you see rain or drizzle during the month of November. It has been recorded to see 35mm of precipitation which decreases a little compared to October.
Wind: The average wind speed that you may receive is around 14km/h.
Fog: In November you may experience days that have fog.
December:
Temperature: December is this time of the month where you can differently feel that winter is here. You can expect to have highs around -6° and lows around -15°C.
Humidity: The humidity during December decreases and is around 73%.
Precipitation: There may be days where you see rain or drizzle or snow during the month of December. It has been recorded to see 24mm of precipitation which decreases a little compared to November.
Wind: The average wind speed that you may receive is around 14km/h.
Fog: In December you may experience days that have fog.
