Annual mean 3°C · wettest around November · prevailing wind W
Warmest
21.0 °C
Coldest
-12.1 °C
Wettest
21%
Windiest
5.2 m/s
Prevailing
W
4.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Fort St. John over the whole year is 3°C. July is the hottest month, with highs of about 20°C; February is the coldest, with lows of about -13°C. Fort St. John has no sharply defined rainy season: the chance of rain on a given day runs from 9% in April, the driest month, to 16% in November, the wettest. Winds in Fort St. John are highest in April, averaging 4.0 m/s (14 km/h), and lightest in March, at 3.5 m/s (13 km/h). The prevailing wind is from the W. The clearest skies in Fort St. John come in August, when the sky is typically 49% covered; January is the cloudiest month, at 62%.
Month by month Fort St. John climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-9°C
-11°C
-15°C
13%
62%
3.8 m/s
0
0
0
February
-9°C
-13°C
-14°C
13%
51%
3.8 m/s
0
0
0
March
-3°C
-8°C
-8°C
10%
53%
3.5 m/s
0
0
3
April
7°C
-1°C
1°C
9%
53%
4.0 m/s
2
0
20
May
15°C
8°C
10°C
10%
54%
4.0 m/s
24
1
70
June
18°C
11°C
14°C
14%
56%
3.9 m/s
47
4
78
July
20°C
13°C
17°C
13%
52%
3.6 m/s
71
9
78
August
20°C
12°C
17°C
11%
49%
3.6 m/s
63
8
76
September
15°C
6°C
10°C
10%
51%
3.6 m/s
22
1
69
October
6°C
1°C
1°C
10%
55%
3.8 m/s
4
0
19
November
-4°C
-7°C
-9°C
16%
61%
3.7 m/s
0
0
1
December
-9°C
-11°C
-15°C
10%
53%
3.8 m/s
0
0
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Fort St. John weather by season
Year round, Fort St. John has days of about -9°C at their warmest in January, its coolest month, and 20°C in July, its warmest; the coolest hours of the day run from -13°C to 13°C through the year, and the average temperature over the year is 3°C around the clock. Rain is most likely around November and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Fort St. John weather in winterDecember to February
High -9°CLow -12°CRain 12%
Winter in Fort St. John has typical daily highs of about -9°C and lows of about -12°C, with a 12% chance of rain on a given day.
Fort St. John weather in springMarch to May
High 6°CLow -0°CRain 10%
Spring in Fort St. John has typical daily highs of about 6°C and lows of about -0°C, with a 10% chance of rain on a given day.
Fort St. John weather in summerJune to August
High 20°CLow 12°CRain 13%
Summer in Fort St. John has typical daily highs of about 20°C and lows of about 12°C, with a 13% chance of rain on a given day.
Fort St. John weather in autumnSeptember to November
High 6°CLow 0°CRain 12%
Autumn in Fort St. John has typical daily highs of about 6°C and lows of about 0°C, with a 12% chance of rain on a given day.
When is the rainy season in Fort St. John?
Fort St. John has no sharply defined rainy season: the chance of rain on a given day runs from 9% in April, the driest month, to 16% in November, the wettest.
What time of year is Fort St. John windiest?
Winds in Fort St. John are highest in April, averaging 4.0 m/s (14 km/h), and lightest in March, at 3.5 m/s (13 km/h). The prevailing wind is from the W.
What is the average temperature in Fort St. John year round?
The average temperature in Fort St. John over the whole year is 3°C. July is the hottest month, with highs of about 20°C; February is the coldest, with lows of about -13°C.