St. John's Weather in December
Average highs run from 4°C on December 1 to 1°C on December 31, and lows from 1°C to -3°C. Normal precipitation for the month is 140 mm over about 19 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
- 2°C
- Average low
- -1°C
- Precipitation
- 140 mm
- Reanalysis high
- 11°CDec 13, 2008
- Reanalysis low
- -10°CDec 31, 1995
- Daylight
- 8 h 44 min to 8 h 30 min
- Cloud cover
- 80%
- Humidity
- 87%
- Dew point
- -2°C
- Wind
- 28.4 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 | 4°C | 1°C | 8°C 2008 | -5°C 1995 | 64% |
| Dec 2 | 4°C | 0°C | 10°C 2008 | -3°C 2012 | 64% |
| Dec 3 | 4°C | 0°C | 8°C 2020 | -6°C 1991 | 65% |
| Dec 4 | 4°C | 0°C | 9°C 2020 | -5°C 1991 | 65% |
| Dec 5 | 3°C | 0°C | 8°C 2019 | -4°C 2002 | 64% |
| Dec 6 | 3°C | 0°C | 8°C 2020 | -6°C 2004 | 63% |
| Dec 7 | 3°C | 0°C | 9°C 2008 | -5°C 2004 | 63% |
| Dec 8 | 3°C | 0°C | 11°C 2008 | -7°C 1991 | 64% |
| Dec 9 | 3°C | -1°C | 6°C 2020 | -8°C 2002 | 63% |
| Dec 10 | 2°C | -1°C | 10°C 2017 | -7°C 2000 | 62% |
| Dec 11 | 2°C | -1°C | 10°C 2019 | -7°C 2002 | 62% |
| Dec 12 | 2°C | -1°C | 9°C 2008 | -7°C 2002 | 60% |
| Dec 13 | 2°C | -1°C | 11°C 2008 | -7°C 2013 | 61% |
| Dec 14 | 2°C | -1°C | 8°C 2017 | -8°C 2007 | 61% |
| Dec 15 | 2°C | -1°C | 9°C 2017 | -7°C 2007 | 59% |
| Dec 16 | 2°C | -1°C | 8°C 2008 | -7°C 1995 | 58% |
| Dec 17 | 2°C | -1°C | 6°C 2011 | -8°C 2016 | 59% |
| Dec 18 | 2°C | -1°C | 10°C 2016 | -7°C 1991 | 59% |
| Dec 19 | 2°C | -1°C | 10°C 2016 | -8°C 2008 | 60% |
| Dec 20 | 2°C | -2°C | 8°C 2004 | -8°C 2008 | 62% |
| Dec 21 | 2°C | -2°C | 6°C 1992 | -8°C 1991 | 62% |
| Dec 22 | 2°C | -2°C | 8°C 2020 | -8°C 1991 | 62% |
| Dec 23 | 2°C | -2°C | 8°C 1998 | -7°C 2013 | 61% |
| Dec 24 | 2°C | -2°C | 9°C 1993 | -7°C 2011 | 60% |
| Dec 25 | 1°C | -2°C | 8°C 1996 | -8°C 2011 | 60% |
| Dec 26 | 1°C | -2°C | 7°C 2003 | -9°C 2013 | 59% |
| Dec 27 | 1°C | -3°C | 6°C 2020 | -9°C 2008 | 58% |
| Dec 28 | 1°C | -3°C | 7°C 2010 | -9°C 1992 | 58% |
| Dec 29 | 1°C | -3°C | 5°C 2009 | -9°C 1993 | 58% |
| Dec 30 | 1°C | -3°C | 6°C 2005 | -9°C 2013 | 57% |
| Dec 31 | 1°C | -3°C | 6°C 2005 | -10°C 1995 | 57% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3:30).
- December 1
- sunrise 7:28 AM, sunset 4:12 PM
- December 31
- sunrise 7:49 AM, sunset 4:19 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 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.