December is one of the cooler months of the year in Rouyn-Noranda, with average highs near -7.5°C and lows around -15.7°C (mean -11.6°C). It is one of the drier months, averaging 59 mm of rainfall and 96% relative humidity across the period.
December is one of the cooler months of the year in Rouyn-Noranda. Across 45 years of records, the warmest December in Rouyn-Noranda was 2015 — when the month averaged -4.4°C — while the coldest was 1989 at -22.4°C. Typical December days reach -7.5°C with nights near -15.7°C. The long-term trend is warming, about 0.6°C per decade.
December is one of the drier months in Rouyn-Noranda, averaging 59 mm of rainfall. The wettest December on record was 2008 with 100 mm, while the driest was 2023 at 23 mm.
Relative humidity in Rouyn-Noranda during December averages 96%. The most humid Decembers were 1981 and 2019 at 100%, and the least humid was 2017 at 88%.
December receives about 0.8 kWh/m²/day of solar energy in Rouyn-Noranda. The sunniest December was 1995 at 1.1 kWh/m²/day, and the cloudiest was 1992 at 0.6.
Average wind speed in Rouyn-Noranda during December is 0.7 m/s. The windiest Decembers were 2020, 2021 and 2025, among others at 0.8 m/s, while the calmest were 1997, 2018 and 2024, among others at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -13.6°C | -11.1°C | -11.7°C | -11.0°C | -10.2°C | +3.4°C |
| Avg High | -9.1°C | -6.7°C | -7.7°C | -7.4°C | -6.1°C | +3°C |
| Avg Low | -18.0°C | -15.4°C | -15.8°C | -14.7°C | -14.3°C | +3.7°C |
| Avg Rain | 63 mm | 52 mm | 65 mm | 57 mm | 60 mm | -3 mm |
December temperatures in Rouyn-Noranda have risen by about 3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -45.7°C (1993) to a record high of 11.6°C (1982).
Rainfall in December is one of the drier months, averaging 59 mm, with a wettest year of 100 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.7°C per decade, narrowing the gap between day and night.
A quieter season to visit Rouyn-Noranda
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Rouyn-Noranda. That said, December — with days averaging -7.5°C and nights around -15.7°C (mean -11.6°C) and moderate rainfall (59 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 | -9.1°C | -14.4°C | -19.7°C | 0.5°C | -29.1°C | 74 mm | 99% | 0.8 m/s | — |
| 2024 | -6.8°C | -10.2°C | -13.6°C | 0.6°C | -30.3°C | 67 mm | 98% | 0.6 m/s | 0.8 |
| 2023 | -2.9°C | -6.2°C | -9.6°C | 3.7°C | -17.7°C | 23 mm | 91% | 0.7 m/s | 0.9 |
| 2022 | -5.3°C | -9.4°C | -13.5°C | 2.5°C | -25.9°C | 63 mm | 97% | 0.7 m/s | 0.8 |
| 2021 | -6.2°C | -10.2°C | -14.3°C | 8.4°C | -26.1°C | 72 mm | 93% | 0.8 m/s | 0.8 |
| 2020 | -6.5°C | -10.9°C | -15.4°C | 0.3°C | -31.1°C | 61 mm | 98% | 0.8 m/s | 0.8 |
| 2019 | -7.7°C | -12.1°C | -16.5°C | 0.1°C | -28.6°C | 43 mm | 100% | 0.7 m/s | 0.9 |
| 2018 | -7.4°C | -11.6°C | -15.8°C | 0.1°C | -26.1°C | 49 mm | 99% | 0.6 m/s | 0.8 |
| 2017 | -10.3°C | -13.0°C | -15.8°C | 4.8°C | -28.1°C | 47 mm | 88% | 0.7 m/s | 1 |
| 2016 | -7.2°C | -11.3°C | -15.3°C | 0.1°C | -33.2°C | 54 mm | 99% | 0.7 m/s | 0.8 |
| 2015 🔥 | -1.4°C | -4.4°C | -7.3°C | 9.6°C | -19.4°C | 93 mm | 93% | 0.7 m/s | 0.7 |
| 2014 | -7.8°C | -11.7°C | -15.7°C | 0.1°C | -29.9°C | 70 mm | 97% | 0.7 m/s | 0.9 |
| 2013 | -12.2°C | -16.1°C | -19.9°C | 0.9°C | -31.1°C | 44 mm | 95% | 0.7 m/s | 1 |
| 2012 | -6.7°C | -10.3°C | -14.0°C | 4.0°C | -23.2°C | 54 mm | 94% | 0.7 m/s | 0.7 |
| 2011 | -5.3°C | -9.7°C | -14.1°C | 2.2°C | -29.8°C | 41 mm | 91% | 0.8 m/s | 0.8 |
| 2010 | -7.6°C | -10.3°C | -12.9°C | 2.6°C | -23.8°C | 74 mm | 98% | 0.8 m/s | 0.7 |
| 2009 | -7.7°C | -11.7°C | -15.6°C | 1.3°C | -25.7°C | 48 mm | 97% | 0.7 m/s | 0.8 |
| 2008 🌧️ | -9.2°C | -14.3°C | -19.5°C | 0.9°C | -35.4°C | 100 mm | 99% | 0.7 m/s | 0.9 |
| 2007 | -8.7°C | -12.7°C | -16.7°C | 0.1°C | -28.0°C | 76 mm | 99% | 0.7 m/s | 0.8 |
| 2006 | -3.6°C | -6.6°C | -9.6°C | 2.2°C | -18.4°C | 53 mm | 93% | 0.7 m/s | 0.7 |
| 2005 | -7.5°C | -11.6°C | -15.7°C | -1.6°C | -29.0°C | 38 mm | 94% | 0.7 m/s | 0.9 |
| 2004 | -10.9°C | -16.1°C | -21.2°C | 0.3°C | -43.7°C | 74 mm | 97% | 0.8 m/s | 0.9 |
| 2003 | -6.1°C | -10.2°C | -14.3°C | 0.2°C | -30.4°C | 67 mm | 97% | 0.7 m/s | 0.9 |
| 2002 | -6.8°C | -10.9°C | -14.9°C | 0.1°C | -26.8°C | 52 mm | 99% | 0.7 m/s | 0.9 |
| 2001 | -3.4°C | -6.3°C | -9.3°C | 8.5°C | -17.9°C | 78 mm | 95% | 0.7 m/s | 0.8 |
| 2000 | -12.8°C | -17.0°C | -21.3°C | 0.1°C | -36.1°C | 58 mm | 99% | 0.7 m/s | 0.9 |
| 1999 | -5.9°C | -10.2°C | -14.4°C | 1.8°C | -27.8°C | 65 mm | 98% | 0.7 m/s | 0.7 |
| 1998 | -4.1°C | -8.6°C | -13.1°C | 4.5°C | -36.4°C | 56 mm | 93% | 0.8 m/s | 0.8 |
| 1997 | -6.8°C | -11.4°C | -16.0°C | 0.1°C | -32.2°C | 34 mm | 99% | 0.6 m/s | 0.8 |
| 1996 | -6.5°C | -10.2°C | -13.9°C | 1.8°C | -36.4°C | 88 mm | 98% | 0.6 m/s | 0.8 |
| 1995 | -11.6°C | -15.5°C | -19.3°C | -1.7°C | -29.9°C | 36 mm | 99% | 0.6 m/s | 1.1 |
| 1994 | -3.4°C | -6.8°C | -10.2°C | 2.5°C | -22.9°C | 28 mm | 93% | 0.7 m/s | 0.7 |
| 1993 | -8.5°C | -13.2°C | -17.8°C | 0.5°C | -45.7°C | 47 mm | 99% | 0.7 m/s | 0.7 |
| 1992 | -6.2°C | -10.4°C | -14.6°C | 2.9°C | -28.1°C | 56 mm | 94% | 0.7 m/s | 0.6 |
| 1991 | -8.1°C | -12.5°C | -16.8°C | 0.7°C | -30.0°C | 57 mm | 94% | 0.8 m/s | 0.7 |
| 1990 | -6.2°C | -11.8°C | -17.4°C | 1.8°C | -37.6°C | 56 mm | 98% | 0.8 m/s | 0.8 |
| 1989 ❄️ | -17.5°C | -22.4°C | -27.4°C | -7.0°C | -39.6°C | 41 mm | 99% | 0.6 m/s | 1 |
| 1988 | -8.2°C | -13.1°C | -18.0°C | 0.9°C | -29.6°C | 62 mm | 94% | 0.7 m/s | 0.7 |
| 1987 | -6.0°C | -9.6°C | -13.2°C | 1.0°C | -28.4°C | 62 mm | 99% | 0.6 m/s | 0.9 |
| 1986 | -6.3°C | -11.4°C | -16.4°C | -0.3°C | -35.6°C | 55 mm | 99% | 0.6 m/s | 0.7 |
| 1985 | -12.7°C | -17.4°C | -22.1°C | -2.6°C | -39.2°C | 59 mm | 99% | 0.6 m/s | 0.9 |
| 1984 | -6.9°C | -11.5°C | -16.0°C | 5.3°C | -29.0°C | 78 mm | 93% | 0.8 m/s | 0.7 |
| 1983 | -12.2°C | -17.1°C | -22.0°C | -0.5°C | -39.0°C | 76 mm | 98% | 0.7 m/s | — |
| 1982 | -4.6°C | -8.7°C | -12.8°C | 11.6°C | -24.9°C | 88 mm | 92% | 0.8 m/s | — |
| 1981 | -7.4°C | -10.9°C | -14.4°C | 0.1°C | -23.4°C | 43 mm | 100% | 0.7 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -7.5°C with lows near -15.7°C (mean -11.6°C), based on 45 years of NASA POWER data.
December averages 59 mm of rainfall in Rouyn-Noranda, one of the drier months. The wettest on record was 100 mm in 2008.
The hottest December reached 11.6°C in 1982. The coldest dipped to -45.7°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°C. Daytime highs moved from -8.8°C to -6.1°C and overnight lows from -17.5°C to -14.1°C over the same span.
December is one of the cooler months of the year in Rouyn-Noranda and one of the drier months, so plan for around -7.5°C daytime highs and -15.7°C at night.
Not quite — December is the 3rd coolest month in Rouyn-Noranda, averaging -11.6°C.
For December in Rouyn-Noranda, pack warm layers and a jacket for chilly mornings, with typical highs of -7.5°C and lows of -15.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 96% — quite humid.
Average wind speed in December is 0.7 m/s. The windiest December on record averaged 0.8 m/s (1982).
The wettest December on record was 2008 with 100 mm. On average, December sees 59 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 Rouyn-Noranda 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.
