December is one of the cooler months of the year in Sorel-Tracy, with average highs near -3.8°C and lows around -12.9°C (mean -8.3°C). It is about average for rainfall, averaging 84 mm of rainfall and 92% relative humidity across the period.
December is one of the cooler months of the year in Sorel-Tracy. Across 45 years of records, the warmest December in Sorel-Tracy was 2015 — when the month averaged -1.3°C — while the coldest was 1989 at -20.2°C. Typical December days reach -3.8°C with nights near -12.9°C. The long-term trend is warming, about 0.8°C per decade.
December is about average for rainfall in Sorel-Tracy, averaging 84 mm of rainfall. The wettest December on record was 2003 with 176 mm, while the driest was 1992 at 30 mm.
Relative humidity in Sorel-Tracy during December averages 92%. The most humid December was 1989 at 97%, and the least humid was 2021 at 83%.
December receives about 1 kWh/m²/day of solar energy in Sorel-Tracy. The sunniest Decembers were 1989 and 1995 at 1.2 kWh/m²/day, and the cloudiest were 1984 and 2015 at 0.8.
Average wind speed in Sorel-Tracy during December is 2.3 m/s. The windiest Decembers were 2022 and 2025 at 2.9 m/s, while the calmest was 2018 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -10.5°C | -7.7°C | -9.0°C | -8.0°C | -5.6°C | +4.9°C |
| Avg High | -5.6°C | -3.0°C | -4.2°C | -3.6°C | -1.7°C | +3.9°C |
| Avg Low | -15.5°C | -12.4°C | -13.7°C | -12.4°C | -9.5°C | +6°C |
| Avg Rain | 79 mm | 66 mm | 108 mm | 93 mm | 68 mm | -11 mm |
December temperatures in Sorel-Tracy have risen by about 3.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -40.9°C (1993) to a record high of 15.1°C (2015).
Rainfall in December is about average for rainfall, averaging 84 mm, with a wettest year of 176 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 1°C per decade, narrowing the gap between day and night.
A quieter season to visit Sorel-Tracy
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Sorel-Tracy. That said, December — with days averaging -3.8°C and nights around -12.9°C (mean -8.3°C) and higher rainfall (84 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | -5.3°C | -9.9°C | -14.6°C | 7.3°C | -24.1°C | 45 mm | 86% | 2.9 m/s | — |
| 2024 | -2.8°C | -6.5°C | -10.2°C | 5.4°C | -21.3°C | 65 mm | 89% | 2.3 m/s | 1 |
| 2023 | -0.2°C | -3.7°C | -7.3°C | 7.8°C | -17.2°C | 91 mm | 89% | 2.1 m/s | 0.9 |
| 2022 | -0.5°C | -4.2°C | -7.9°C | 5.1°C | -17.4°C | 85 mm | 88% | 2.9 m/s | 1 |
| 2021 | -1.2°C | -5.3°C | -9.4°C | 11.0°C | -16.2°C | 61 mm | 83% | 2.6 m/s | 1 |
| 2020 | -0.1°C | -3.9°C | -7.8°C | 11.7°C | -20.0°C | 62 mm | 84% | 2.6 m/s | 0.9 |
| 2019 | -2.5°C | -6.7°C | -10.8°C | 5.8°C | -19.0°C | 57 mm | 90% | 2.6 m/s | 1 |
| 2018 | -4.9°C | -10.5°C | -16.0°C | 3.2°C | -29.0°C | 92 mm | 94% | 1.7 m/s | 1.1 |
| 2017 | -7.3°C | -11.3°C | -15.3°C | 5.6°C | -33.3°C | 47 mm | 89% | 2.4 m/s | 1 |
| 2016 | -3.9°C | -9.2°C | -14.5°C | 2.2°C | -35.4°C | 91 mm | 94% | 2.4 m/s | 0.9 |
| 2015 🔥 | 2.1°C | -1.3°C | -4.7°C | 15.1°C | -15.1°C | 116 mm | 92% | 2.1 m/s | 0.8 |
| 2014 | -3.0°C | -6.9°C | -10.8°C | 2.8°C | -25.0°C | 94 mm | 91% | 2.3 m/s | 1.1 |
| 2013 | -7.4°C | -11.9°C | -16.5°C | 3.2°C | -30.8°C | 75 mm | 93% | 2.2 m/s | 1 |
| 2012 | -2.9°C | -7.2°C | -11.6°C | 8.6°C | -23.9°C | 132 mm | 92% | 2.4 m/s | 0.9 |
| 2011 | -1.5°C | -5.9°C | -10.2°C | 5.3°C | -30.0°C | 102 mm | 90% | 2.2 m/s | 1 |
| 2010 | -4.6°C | -9.0°C | -13.4°C | 5.6°C | -22.0°C | 122 mm | 94% | 2.3 m/s | 0.9 |
| 2009 | -4.9°C | -9.1°C | -13.2°C | 4.2°C | -29.2°C | 111 mm | 94% | 2.2 m/s | 1 |
| 2008 | -5.6°C | -11.4°C | -17.2°C | 3.3°C | -28.1°C | 138 mm | 93% | 2.6 m/s | 1 |
| 2007 | -5.8°C | -10.7°C | -15.6°C | 1.6°C | -27.7°C | 119 mm | 95% | 2.4 m/s | 1 |
| 2006 | -0.6°C | -4.6°C | -8.5°C | 5.7°C | -18.4°C | 92 mm | 92% | 2.4 m/s | 1 |
| 2005 | -4.0°C | -8.2°C | -12.5°C | 2.4°C | -27.8°C | 88 mm | 92% | 2.5 m/s | 1 |
| 2004 | -6.1°C | -12.1°C | -18.1°C | 3.3°C | -34.9°C | 128 mm | 95% | 2.5 m/s | 1 |
| 2003 🌧️ | -4.0°C | -8.7°C | -13.4°C | 1.7°C | -25.6°C | 176 mm | 94% | 2.4 m/s | 1.1 |
| 2002 | -4.2°C | -9.3°C | -14.4°C | 1.3°C | -29.4°C | 38 mm | 94% | 2.4 m/s | 1 |
| 2001 | 0.8°C | -2.7°C | -6.3°C | 12.1°C | -17.7°C | 49 mm | 90% | 2.1 m/s | 1.1 |
| 2000 | -8.0°C | -13.2°C | -18.3°C | 2.9°C | -31.1°C | 141 mm | 93% | 2.5 m/s | 1.1 |
| 1999 | -2.2°C | -6.8°C | -11.4°C | 7.8°C | -32.4°C | 62 mm | 90% | 2.3 m/s | 0.9 |
| 1998 | 0.7°C | -4.2°C | -9.1°C | 12.7°C | -34.2°C | 70 mm | 86% | 2.6 m/s | 1.1 |
| 1997 | -4.7°C | -9.9°C | -15.2°C | 1.2°C | -30.0°C | 48 mm | 94% | 2 m/s | 1.1 |
| 1996 | -0.6°C | -4.0°C | -7.5°C | 6.1°C | -26.5°C | 79 mm | 91% | 2.3 m/s | 0.9 |
| 1995 | -6.9°C | -12.2°C | -17.6°C | 0.0°C | -27.4°C | 43 mm | 95% | 2.1 m/s | 1.2 |
| 1994 | -1.9°C | -6.3°C | -10.6°C | 7.0°C | -22.1°C | 52 mm | 90% | 2.2 m/s | 0.9 |
| 1993 | -4.0°C | -9.0°C | -14.0°C | 4.1°C | -40.9°C | 56 mm | 92% | 2.2 m/s | 1 |
| 1992 | -2.1°C | -5.9°C | -9.6°C | 6.4°C | -20.7°C | 30 mm | 86% | 2.7 m/s | 0.9 |
| 1991 | -5.1°C | -9.8°C | -14.5°C | 5.8°C | -25.4°C | 75 mm | 90% | 2.4 m/s | 1.1 |
| 1990 | -3.4°C | -9.0°C | -14.6°C | 4.5°C | -30.1°C | 142 mm | 95% | 2.3 m/s | 1 |
| 1989 ❄️ | -14.2°C | -20.2°C | -26.2°C | 0.4°C | -35.2°C | 49 mm | 97% | 2.1 m/s | 1.2 |
| 1988 | -4.7°C | -9.2°C | -13.7°C | 4.3°C | -28.0°C | 45 mm | 87% | 2.5 m/s | 0.9 |
| 1987 | -3.7°C | -8.4°C | -13.0°C | 2.2°C | -27.9°C | 64 mm | 96% | 1.9 m/s | 1.1 |
| 1986 | -4.7°C | -10.4°C | -16.1°C | 0.5°C | -27.5°C | 80 mm | 96% | 2.3 m/s | 0.9 |
| 1985 | -5.5°C | -10.6°C | -15.8°C | 3.7°C | -35.5°C | 52 mm | 92% | 2.3 m/s | 1 |
| 1984 | -3.6°C | -8.2°C | -12.8°C | 4.0°C | -32.2°C | 117 mm | 93% | 2.4 m/s | 0.8 |
| 1983 | -7.7°C | -13.4°C | -19.2°C | 0.6°C | -37.4°C | 161 mm | 96% | 2.6 m/s | — |
| 1982 | -2.1°C | -6.4°C | -10.8°C | 11.0°C | -26.1°C | 95 mm | 89% | 2.4 m/s | — |
| 1981 | -4.1°C | -8.0°C | -12.0°C | 2.6°C | -24.7°C | 52 mm | 95% | 2.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -3.8°C with lows near -12.9°C (mean -8.3°C), based on 45 years of NASA POWER data.
December averages 84 mm of rainfall in Sorel-Tracy, about average for rainfall. The wettest on record was 176 mm in 2003.
The hottest December reached 15.1°C in 2015. The coldest dipped to -40.9°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3.4°C. Daytime highs moved from -4.6°C to -2°C and overnight lows from -14.1°C to -9.9°C over the same span.
December is one of the cooler months of the year in Sorel-Tracy and about average for rainfall, so plan for around -3.8°C daytime highs and -12.9°C at night.
Not quite — December is the 3rd coolest month in Sorel-Tracy, averaging -8.3°C.
For December in Sorel-Tracy, pack warm layers and a jacket for chilly mornings, with typical highs of -3.8°C and lows of -12.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 92% — quite humid.
Average wind speed in December is 2.3 m/s. The windiest December on record averaged 2.9 m/s (2022).
The wettest December on record was 2003 with 176 mm. On average, December sees 84 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Sorel-Tracy behaves each December, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for December specifically, along with year-by-year records and how the month has changed over the decades.
