January is one of the cooler months of the year in L’Assomption, with average highs near -7.8°C and lows around -19°C (mean -13.4°C). It is one of the drier months, averaging 67 mm of rainfall and 93% relative humidity across the period.
January is one of the cooler months of the year in L’Assomption. Across 45 years of records, the warmest January in L’Assomption was 2023 — when the month averaged -8.6°C — while the coldest was 1994 at -20.3°C. Typical January days reach -7.8°C with nights near -19°C. The long-term trend is warming, about 1°C per decade.
January is one of the drier months in L’Assomption, averaging 67 mm of rainfall. The wettest January on record was 2006 with 153 mm, while the driest was 2025 at 27 mm.
Relative humidity in L’Assomption during January averages 93%. The most humid January was 2006 at 96%, and the least humid was 2025 at 85%.
January receives about 1.4 kWh/m²/day of solar energy in L’Assomption. The sunniest January was 2004 at 1.8 kWh/m²/day, and the cloudiest were 1986 and 2023 at 1.1.
Average wind speed in L’Assomption during January is 2.6 m/s. The windiest Januarys were 1997, 1999 and 2025 at 3.1 m/s, while the calmest were 2001 and 2021 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -15.4°C | -13.7°C | -13.3°C | -12.6°C | -11.1°C | +4.3°C |
| Avg High | -9.4°C | -8.0°C | -8.0°C | -7.0°C | -5.8°C | +3.6°C |
| Avg Low | -21.3°C | -19.5°C | -18.7°C | -18.3°C | -16.3°C | +5°C |
| Avg Rain | 54 mm | 86 mm | 67 mm | 70 mm | 53 mm | -1 mm |
January temperatures in L’Assomption have risen by about 5.7°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -46.3°C (1981) to a record high of 5.9°C (2007).
Rainfall in January is one of the drier months, averaging 67 mm, with a wettest year of 153 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 1.1°C per decade, narrowing the gap between day and night.
A quieter season to visit L’Assomption
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting L’Assomption. That said, January — with days averaging -7.8°C and nights around -19°C (mean -13.4°C) and moderate rainfall (67 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 | -6.3°C | -10.5°C | -14.7°C | 1.2°C | -26.1°C | 27 mm | 85% | 3.1 m/s | 1.4 |
| 2024 | -4.9°C | -10.0°C | -15.0°C | 2.2°C | -29.1°C | 64 mm | 92% | 2.6 m/s | 1.3 |
| 2023 🔥 | -3.7°C | -8.6°C | -13.5°C | 3.9°C | -23.3°C | 55 mm | 93% | 2.4 m/s | 1.1 |
| 2022 | -9.6°C | -16.8°C | -24.0°C | 0.8°C | -34.9°C | 33 mm | 90% | 2.5 m/s | 1.6 |
| 2021 | -5.0°C | -10.1°C | -15.2°C | 1.5°C | -27.4°C | 34 mm | 93% | 2 m/s | 1.4 |
| 2020 | -5.5°C | -10.4°C | -15.4°C | 1.8°C | -29.2°C | 105 mm | 95% | 2.4 m/s | 1.2 |
| 2019 | -9.4°C | -15.1°C | -20.9°C | 0.7°C | -31.8°C | 90 mm | 93% | 2.8 m/s | 1.3 |
| 2018 | -7.7°C | -13.5°C | -19.4°C | 5.2°C | -35.0°C | 89 mm | 93% | 2.9 m/s | 1.4 |
| 2017 | -4.5°C | -9.3°C | -14.0°C | 1.3°C | -31.2°C | 75 mm | 94% | 2.7 m/s | 1.4 |
| 2016 | -5.3°C | -10.5°C | -15.8°C | 2.2°C | -29.4°C | 47 mm | 93% | 2.7 m/s | 1.3 |
| 2015 | -8.9°C | -15.9°C | -22.9°C | 0.1°C | -36.3°C | 60 mm | 93% | 2.8 m/s | 1.7 |
| 2014 | -8.4°C | -13.9°C | -19.4°C | 2.0°C | -35.4°C | 65 mm | 93% | 2.8 m/s | 1.6 |
| 2013 | -6.6°C | -12.6°C | -18.6°C | 4.9°C | -36.6°C | 53 mm | 93% | 2.7 m/s | 1.5 |
| 2012 | -5.6°C | -12.2°C | -18.9°C | 1.6°C | -32.1°C | 91 mm | 94% | 2.6 m/s | 1.3 |
| 2011 | -8.3°C | -13.3°C | -18.4°C | 2.4°C | -37.1°C | 38 mm | 93% | 2.1 m/s | 1.4 |
| 2010 | -5.3°C | -9.9°C | -14.4°C | 2.5°C | -26.0°C | 88 mm | 94% | 2.6 m/s | 1.4 |
| 2009 | -10.9°C | -16.7°C | -22.5°C | -0.6°C | -36.5°C | 64 mm | 94% | 2.3 m/s | 1.5 |
| 2008 | -5.3°C | -10.3°C | -15.3°C | 4.2°C | -30.4°C | 86 mm | 94% | 2.8 m/s | 1.4 |
| 2007 | -6.2°C | -11.3°C | -16.4°C | 5.9°C | -33.8°C | 81 mm | 91% | 2.6 m/s | 1.5 |
| 2006 🌧️ | -4.4°C | -8.8°C | -13.2°C | 1.8°C | -25.4°C | 153 mm | 96% | 2.6 m/s | 1.3 |
| 2005 | -9.0°C | -15.1°C | -21.2°C | 4.1°C | -33.6°C | 56 mm | 91% | 2.6 m/s | 1.6 |
| 2004 | -14.3°C | -19.7°C | -25.2°C | 0.7°C | -41.2°C | 42 mm | 94% | 2.7 m/s | 1.8 |
| 2003 | -10.6°C | -16.2°C | -21.7°C | -0.3°C | -33.2°C | 32 mm | 92% | 2.3 m/s | 1.7 |
| 2002 | -4.3°C | -8.8°C | -13.4°C | 0.9°C | -21.3°C | 42 mm | 94% | 2.3 m/s | 1.3 |
| 2001 | -7.5°C | -13.6°C | -19.7°C | -1.1°C | -27.7°C | 42 mm | 95% | 2 m/s | 1.5 |
| 2000 | -8.0°C | -13.0°C | -18.1°C | 4.0°C | -29.9°C | 71 mm | 90% | 3 m/s | 1.4 |
| 1999 | -8.3°C | -14.3°C | -20.4°C | 1.6°C | -36.4°C | 143 mm | 94% | 3.1 m/s | 1.5 |
| 1998 | -6.6°C | -11.7°C | -16.8°C | 1.7°C | -34.6°C | 96 mm | 95% | 2.7 m/s | 1.5 |
| 1997 | -8.0°C | -14.0°C | -20.0°C | 1.9°C | -37.5°C | 74 mm | 91% | 3.1 m/s | 1.4 |
| 1996 | -9.0°C | -14.3°C | -19.6°C | 4.8°C | -33.3°C | 56 mm | 92% | 2.7 m/s | 1.3 |
| 1995 | -4.4°C | -8.9°C | -13.5°C | 5.2°C | -34.2°C | 104 mm | 93% | 2.7 m/s | 1.4 |
| 1994 ❄️ | -13.8°C | -20.3°C | -26.9°C | 1.1°C | -37.4°C | 72 mm | 94% | 2.8 m/s | 1.4 |
| 1993 | -8.0°C | -13.7°C | -19.4°C | 2.3°C | -31.4°C | 73 mm | 92% | 2.5 m/s | 1.3 |
| 1992 | -9.9°C | -15.8°C | -21.7°C | 0.8°C | -40.5°C | 94 mm | 95% | 2.2 m/s | 1.5 |
| 1991 | -8.6°C | -15.3°C | -22.0°C | 0.5°C | -37.1°C | 58 mm | 95% | 2.5 m/s | 1.5 |
| 1990 | -3.1°C | -8.7°C | -14.4°C | 1.6°C | -29.4°C | 94 mm | 95% | 2.8 m/s | 1.2 |
| 1989 | -5.5°C | -12.5°C | -19.5°C | 1.4°C | -38.4°C | 73 mm | 95% | 2.7 m/s | 1.4 |
| 1988 | -7.0°C | -12.8°C | -18.6°C | 2.8°C | -38.1°C | 40 mm | 95% | 2.7 m/s | 1.3 |
| 1987 | -8.7°C | -14.1°C | -19.4°C | -2.2°C | -33.1°C | 40 mm | 95% | 2.2 m/s | 1.2 |
| 1986 | -7.9°C | -14.1°C | -20.3°C | 1.7°C | -35.8°C | 84 mm | 94% | 2.8 m/s | 1.1 |
| 1985 | -12.0°C | -17.8°C | -23.7°C | -1.2°C | -33.0°C | 40 mm | 95% | 2.6 m/s | 1.5 |
| 1984 | -10.4°C | -15.9°C | -21.5°C | 0.6°C | -36.0°C | 35 mm | 95% | 2.2 m/s | 1.4 |
| 1983 | -6.9°C | -11.7°C | -16.5°C | 1.8°C | -29.2°C | 70 mm | 92% | 2.4 m/s | — |
| 1982 | -12.7°C | -20.1°C | -27.5°C | 0.6°C | -44.2°C | 78 mm | 94% | 2.7 m/s | — |
| 1981 | -13.3°C | -19.2°C | -25.1°C | 1.2°C | -46.3°C | 29 mm | 95% | 2.3 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around -7.8°C with lows near -19°C (mean -13.4°C), based on 45 years of NASA POWER data.
January averages 67 mm of rainfall in L’Assomption, one of the drier months. The wettest on record was 153 mm in 2006.
The hottest January reached 5.9°C in 2007. The coldest dipped to -46.3°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 5.7°C. Daytime highs moved from -11.1°C to -5.9°C and overnight lows from -22.9°C to -16.5°C over the same span.
January is one of the cooler months of the year in L’Assomption and one of the drier months, so plan for around -7.8°C daytime highs and -19°C at night.
Yes — January is the coldest month of the year in L’Assomption, averaging -13.4°C.
For January in L’Assomption, pack warm layers and a jacket for chilly mornings, with typical highs of -7.8°C and lows of -19°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 93% — quite humid.
Average wind speed in January is 2.6 m/s. The windiest January on record averaged 3.1 m/s (1997).
The wettest January on record was 2006 with 153 mm. On average, January sees 67 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 L’Assomption behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
