Fort St. John Weather in December
Average highs run from -8°C on December 1 to -11°C on December 31, and lows from -15°C to -18°C. Normal precipitation for the month is 40 mm over about 9 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- -9°C
- Average low
- -16°C
- Precipitation
- 40 mm
- Reanalysis high
- 4°CDec 10, 2005
- Reanalysis low
- -48°CDec 28, 1992
- Daylight
- 7 h 21 min to 7 h 01 min
- Cloud cover
- 70%
- Humidity
- 98%
- Dew point
- -13°C
- Wind
- 8.3 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | -8°C | -15°C | 2°C 2002 | -28°C 1994 | 35% |
| Dec 2 | -8°C | -15°C | 2°C 2004 | -35°C 1994 | 35% |
| Dec 3 | -8°C | -15°C | 2°C 2004 | -34°C 1994 | 35% |
| Dec 4 | -8°C | -15°C | 1°C 2020 | -33°C 1995 | 35% |
| Dec 5 | -8°C | -15°C | 2°C 2011 | -32°C 2007 | 36% |
| Dec 6 | -8°C | -15°C | 3°C 2000 | -33°C 2013 | 36% |
| Dec 7 | -8°C | -15°C | 3°C 2020 | -41°C 1995 | 35% |
| Dec 8 | -8°C | -15°C | 1°C 2005 | -33°C 1995 | 35% |
| Dec 9 | -8°C | -15°C | 3°C 2005 | -36°C 1995 | 36% |
| Dec 10 | -8°C | -15°C | 4°C 2005 | -37°C 1995 | 36% |
| Dec 11 | -8°C | -15°C | 1°C 2005 | -31°C 2016 | 38% |
| Dec 12 | -8°C | -15°C | 2°C 1997 | -40°C 2009 | 37% |
| Dec 13 | -8°C | -15°C | 3°C 1997 | -42°C 2009 | 39% |
| Dec 14 | -8°C | -15°C | 2°C 1997 | -37°C 2009 | 39% |
| Dec 15 | -8°C | -15°C | 0°C 2013 | -33°C 2009 | 37% |
| Dec 16 | -8°C | -15°C | 2°C 2004 | -31°C 2016 | 37% |
| Dec 17 | -8°C | -15°C | 0°C 2004 | -35°C 1992 | 36% |
| Dec 18 | -8°C | -15°C | 1°C 2004 | -32°C 1992 | 35% |
| Dec 19 | -8°C | -15°C | 3°C 2004 | -32°C 2008 | 34% |
| Dec 20 | -9°C | -16°C | 1°C 2011 | -32°C 2008 | 32% |
| Dec 21 | -9°C | -16°C | 1°C 2005 | -37°C 2008 | 32% |
| Dec 22 | -9°C | -16°C | 1°C 2005 | -41°C 1996 | 32% |
| Dec 23 | -9°C | -16°C | 1°C 2005 | -40°C 1996 | 32% |
| Dec 24 | -10°C | -17°C | 3°C 2005 | -36°C 1996 | 31% |
| Dec 25 | -10°C | -17°C | 3°C 2005 | -32°C 2012 | 31% |
| Dec 26 | -10°C | -17°C | 1°C 2000 | -32°C 2012 | 29% |
| Dec 27 | -10°C | -17°C | 0°C 1991 | -47°C 1992 | 30% |
| Dec 28 | -11°C | -18°C | 0°C 1997 | -48°C 1992 | 29% |
| Dec 29 | -11°C | -18°C | -1°C 1997 | -44°C 1992 | 30% |
| Dec 30 | -11°C | -18°C | 0°C 1997 | -42°C 2017 | 31% |
| Dec 31 | -11°C | -18°C | 0°C 2000 | -39°C 1992 | 32% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 9:12 AM, sunset 4:33 PM
- December 31
- sunrise 9:36 AM, sunset 4:37 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.