Fort St James is a weather station located 688 m above sea level. Its records go back to 1895: 125 years of temperature are available up to 2020, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2020. Over 1991–2020 the annual mean temperature there is 3.8 °C, clearly higher than over 1961–1990 (2.7 °C): a difference of 1.0 °C. The warmest year of the series is 2015 (6.4 °C) and the coldest 1900 (−0.8 °C). The last complete year, 2020, ranks 11 out of 125, from warmest to coldest. Over 1961–2020, the annual mean temperature changes by +0.36 °C per decade. The station ranks 31 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1895
The first ten years of the series (1895–1904) average 1.0 °C; the last ten (2011–2020) average 4.3 °C, a difference of +3.3 °C. Of the ten warmest years in the series, 5 fall after 1999. The warmest is 2015 (6.4 °C). The ten-year running mean peaks at 4.4 °C (2019) and bottoms out at 0.8 °C (1902).
Annual rainfall since 1895
On average 462 mm of rain falls per year over the 113 documented years. The wettest year, 1959, received 770 mm; the driest, 1916, only 282 mm, which is 2.7 times less. The 1991–2020 normal (472 mm per year) is 21 mm (4.3 %) below the 1961–1990 one (493 mm). Over 1991–2020, October is on average the wettest month (50 mm) and March the driest (25 mm). Between 1991 and 2010, 18 years out of 20 exceeded the series average.
Monthly normals: 1961–1990 against 1991–2020
The table compares, month by month, the mean temperature and the rainfall total of two thirty-year reference periods. The difference column shows what the recent period changes compared with the earlier one.
| Month | Temp. 1961–1990 | Temp. 1991–2020 | Difference | Rain 1961–1990 | Rain 1991–2020 | Difference |
|---|---|---|---|---|---|---|
| January | −11.8 °C | −9.1 °C | +2.7 °C | 48 mm | 43 mm | −5 mm |
| February | −7.4 °C | −6.9 °C | +0.5 °C | 28 mm | 27 mm | −1 mm |
| March | −2.6 °C | −2.0 °C | +0.6 °C | 28 mm | 25 mm | −3 mm |
| April | 3.3 °C | 3.9 °C | +0.6 °C | 21 mm | 26 mm | +5 mm |
| May | 8.4 °C | 9.7 °C | +1.3 °C | 38 mm | 38 mm | 0 mm |
| June | 12.7 °C | 13.4 °C | +0.7 °C | 48 mm | 49 mm | +1 mm |
| July | 15.0 °C | 15.6 °C | +0.6 °C | 50 mm | 46 mm | −4 mm |
| August | 14.4 °C | 15.0 °C | +0.6 °C | 48 mm | 45 mm | −3 mm |
| September | 9.7 °C | 10.5 °C | +0.8 °C | 48 mm | 38 mm | −10 mm |
| October | 4.5 °C | 4.4 °C | −0.1 °C | 43 mm | 50 mm | +7 mm |
| November | −3.5 °C | −2.1 °C | +1.4 °C | 43 mm | 43 mm | 0 mm |
| December | −9.8 °C | −7.1 °C | +2.7 °C | 50 mm | 42 mm | −8 mm |
The largest temperature change is in January (+2.7 °C) and the smallest in October (−0.1 °C); over the year the mean difference is +1.0 °C, and 11 months out of twelve are warmer than before. For rainfall, the largest difference is in October (+7 mm) and the smallest in September (−10 mm).
Records at Fort St James
- Warmest year: 6.4 °C, in 2015
- Coldest year: −0.8 °C, in 1900
- Driest year: 282 mm, in 1916
- Wettest year: 770 mm, in 1959
- Warmest month: 18.1 °C, in July 2014
- Coldest month: −27.2 °C, in January 1950
- Wettest month: 147 mm, in June 1993
7.2 °C separate the warmest year of the series from the coldest. Daily records are not part of the dataset for this station: only annual and monthly extremes are shown.
Temperature trend over 1961–2020
The regression line of annual mean temperature changes by +0.36 °C per decade between 1961 and 2020, about +2.1 °C over the whole period. That is faster than the median of the 240 stations (+0.25 °C per decade), by 0.11 °C per decade: the station ranks 31 out of 240.
Data source and licence
Data source: Environment and Climate Change Canada (dataset “AHCCD (ahccd-monthly) + climate-daily”), licence Open Government Licence – Canada. Last updated: 29 October 2026.
The data for Fort St James are shown as the source publishes them; this site does not correct them. A year is kept only if at least eleven months of measurements are available, and a normal is computed only with at least twenty years of data out of its thirty. Temperatures are rounded to 0.1 °C and rainfall to the millimetre. The station is one of 240 stations in Canada: the overview page lets you compare them.
Frequently asked questions
What is the annual mean temperature at Fort St James?
Over 1991–2020, the annual mean temperature at Fort St James is 3.8 °C. It was 2.7 °C over 1961–1990, a difference of +1.0 °C.
What is the warmest year ever measured at Fort St James?
Since records began in 1895, the warmest year at Fort St James is 2015, at 6.4 °C on average. The coldest is 1900 (−0.8 °C).
Is the climate at Fort St James getting warmer?
Yes: at Fort St James, the annual mean temperature rises by 0.36 °C per decade between 1961 and 2020, +2.1 °C in total. 5 of the 10 warmest years in the series fall after 1999.
Neighbouring stations