January is one of the cooler months of the year in Joliette, with average highs near -8.5°C and lows around -19.2°C (mean -13.8°C). It is one of the drier months, averaging 73 mm of rainfall and 96% relative humidity across the period.
January is one of the cooler months of the year in Joliette. Across 45 years of records, the warmest Januarys in Joliette were 1990, 1995 and 2006 — when the month averaged -9.1°C — while the coldest was 1994 at -20.4°C. Typical January days reach -8.5°C with nights near -19.2°C. The long-term trend is warming, about 0.8°C per decade.
January is one of the drier months in Joliette, averaging 73 mm of rainfall. The wettest January on record was 2006 with 158 mm, while the driest was 1981 at 29 mm.
Relative humidity in Joliette during January averages 96%. The most humid January was 2006 at 97%, and the least humid was 2000 at 91%.
January receives about 1.4 kWh/m²/day of solar energy in Joliette. The sunniest Januarys were 2003 and 2005 at 1.7 kWh/m²/day, and the cloudiest were 2006, 2017 and 2019, among others at 1.2.
Average wind speed in Joliette during January is 1.8 m/s. The windiest January was 2000 at 2.2 m/s, while the calmest was 2001 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -15.5°C | -14.0°C | -13.9°C | -13.3°C | -12.0°C | +3.5°C |
| Avg High | -9.9°C | -8.6°C | -8.8°C | -7.9°C | -7.0°C | +2.9°C |
| Avg Low | -21.2°C | -19.5°C | -18.9°C | -18.7°C | -17.1°C | +4.1°C |
| Avg Rain | 59 mm | 80 mm | 69 mm | 84 mm | 70 mm | +11 mm |
January temperatures in Joliette have risen by about 4.9°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -44°C (1981) to a record high of 6.2°C (1995).
Rainfall in January is one of the drier months, averaging 73 mm, with a wettest year of 158 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.7°C per decade while lows rose 0.9°C per decade, narrowing the gap between day and night.
A quieter season to visit Joliette
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Joliette. That said, January — with days averaging -8.5°C and nights around -19.2°C (mean -13.8°C) and moderate rainfall (73 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 | -8.1°C | -12.3°C | -16.5°C | 0.4°C | -27.1°C | 32 mm | 93% | 2.1 m/s | 1.4 |
| 2024 | -5.9°C | -10.6°C | -15.3°C | 0.8°C | -28.9°C | 87 mm | 95% | 1.8 m/s | 1.3 |
| 2023 | -4.6°C | -9.5°C | -14.4°C | 2.1°C | -24.5°C | 65 mm | 95% | 1.6 m/s | 1.3 |
| 2022 | -10.7°C | -17.9°C | -25.1°C | 0.3°C | -34.9°C | 49 mm | 95% | 1.7 m/s | 1.6 |
| 2021 | -6.2°C | -10.9°C | -15.7°C | 0.2°C | -28.0°C | 55 mm | 96% | 1.5 m/s | 1.4 |
| 2020 | -6.4°C | -11.0°C | -15.6°C | 0.8°C | -29.1°C | 130 mm | 96% | 1.6 m/s | 1.3 |
| 2019 | -10.3°C | -15.8°C | -21.2°C | 0.2°C | -32.4°C | 100 mm | 96% | 1.9 m/s | 1.2 |
| 2018 | -8.4°C | -13.9°C | -19.5°C | 5.4°C | -33.5°C | 99 mm | 96% | 2 m/s | 1.3 |
| 2017 | -5.3°C | -9.8°C | -14.3°C | 0.6°C | -31.8°C | 70 mm | 97% | 1.9 m/s | 1.2 |
| 2016 | -6.1°C | -11.4°C | -16.7°C | 1.1°C | -27.6°C | 74 mm | 97% | 1.8 m/s | 1.3 |
| 2015 | -9.7°C | -16.7°C | -23.7°C | -0.8°C | -37.3°C | 66 mm | 96% | 1.9 m/s | 1.6 |
| 2014 | -9.6°C | -14.8°C | -19.9°C | 1.1°C | -36.0°C | 69 mm | 96% | 1.9 m/s | 1.4 |
| 2013 | -7.4°C | -13.2°C | -19.0°C | 1.7°C | -36.4°C | 66 mm | 96% | 1.8 m/s | 1.5 |
| 2012 | -6.5°C | -12.7°C | -18.9°C | 0.9°C | -31.0°C | 109 mm | 96% | 1.8 m/s | 1.3 |
| 2011 | -9.5°C | -14.2°C | -18.9°C | 2.0°C | -35.8°C | 62 mm | 96% | 1.5 m/s | 1.6 |
| 2010 | -6.0°C | -10.4°C | -14.7°C | 1.4°C | -28.6°C | 121 mm | 97% | 1.8 m/s | 1.3 |
| 2009 | -12.0°C | -17.3°C | -22.7°C | -1.7°C | -36.6°C | 65 mm | 97% | 1.6 m/s | 1.6 |
| 2008 | -6.1°C | -10.8°C | -15.4°C | 2.1°C | -29.1°C | 94 mm | 96% | 1.9 m/s | 1.4 |
| 2007 | -7.0°C | -11.8°C | -16.6°C | 5.5°C | -32.9°C | 86 mm | 94% | 1.8 m/s | 1.5 |
| 2006 🌧️ | -4.9°C | -9.1°C | -13.3°C | 1.1°C | -23.7°C | 158 mm | 97% | 1.8 m/s | 1.2 |
| 2005 | -10.4°C | -16.5°C | -22.7°C | 1.3°C | -35.0°C | 61 mm | 96% | 1.7 m/s | 1.7 |
| 2004 | -15.1°C | -19.9°C | -24.8°C | 0.4°C | -39.5°C | 49 mm | 96% | 1.9 m/s | 1.6 |
| 2003 | -11.5°C | -16.8°C | -22.1°C | -2.3°C | -33.1°C | 32 mm | 95% | 1.6 m/s | 1.7 |
| 2002 | -5.0°C | -9.4°C | -13.9°C | 0.6°C | -21.9°C | 38 mm | 96% | 1.6 m/s | 1.3 |
| 2001 | -7.8°C | -13.6°C | -19.3°C | -0.8°C | -28.6°C | 43 mm | 97% | 1.4 m/s | 1.5 |
| 2000 | -8.5°C | -13.4°C | -18.3°C | 2.9°C | -30.9°C | 61 mm | 91% | 2.2 m/s | 1.4 |
| 1999 | -8.9°C | -14.4°C | -20.0°C | 0.9°C | -34.0°C | 143 mm | 96% | 2.1 m/s | 1.4 |
| 1998 | -7.2°C | -12.0°C | -16.9°C | 0.9°C | -32.2°C | 87 mm | 97% | 1.8 m/s | 1.4 |
| 1997 | -9.2°C | -15.1°C | -21.0°C | 1.1°C | -36.9°C | 65 mm | 95% | 2.1 m/s | 1.5 |
| 1996 | -9.5°C | -14.8°C | -20.1°C | 3.4°C | -33.0°C | 54 mm | 94% | 1.8 m/s | 1.4 |
| 1995 | -4.8°C | -9.1°C | -13.4°C | 6.2°C | -31.5°C | 73 mm | 93% | 1.9 m/s | 1.4 |
| 1994 ❄️ | -14.1°C | -20.4°C | -26.7°C | 0.6°C | -37.3°C | 61 mm | 96% | 1.9 m/s | 1.5 |
| 1993 | -8.6°C | -13.7°C | -18.9°C | 1.8°C | -31.1°C | 58 mm | 94% | 1.7 m/s | 1.4 |
| 1992 | -10.5°C | -16.1°C | -21.8°C | 0.3°C | -39.2°C | 99 mm | 97% | 1.6 m/s | 1.5 |
| 1991 | -9.3°C | -15.6°C | -21.9°C | -0.4°C | -37.8°C | 59 mm | 97% | 1.7 m/s | 1.4 |
| 1990 🔥 | -3.9°C | -9.1°C | -14.4°C | 0.9°C | -28.8°C | 98 mm | 97% | 1.9 m/s | 1.2 |
| 1989 | -6.2°C | -12.8°C | -19.4°C | 0.7°C | -36.5°C | 76 mm | 97% | 1.8 m/s | 1.3 |
| 1988 | -7.8°C | -13.3°C | -18.9°C | 1.4°C | -37.3°C | 45 mm | 97% | 1.8 m/s | 1.3 |
| 1987 | -8.8°C | -13.9°C | -19.0°C | -1.7°C | -32.4°C | 47 mm | 97% | 1.5 m/s | 1.3 |
| 1986 | -8.7°C | -14.2°C | -19.8°C | 1.0°C | -35.5°C | 88 mm | 97% | 2 m/s | 1.2 |
| 1985 | -12.5°C | -17.7°C | -22.9°C | -2.4°C | -31.6°C | 42 mm | 97% | 1.9 m/s | 1.5 |
| 1984 | -11.0°C | -16.3°C | -21.6°C | -0.2°C | -34.7°C | 35 mm | 97% | 1.5 m/s | 1.4 |
| 1983 | -7.5°C | -12.1°C | -16.7°C | 1.0°C | -28.2°C | 77 mm | 94% | 1.7 m/s | — |
| 1982 | -13.3°C | -20.2°C | -27.2°C | 0.3°C | -40.8°C | 89 mm | 96% | 1.9 m/s | — |
| 1981 | -13.5°C | -19.2°C | -24.9°C | 0.6°C | -44.0°C | 29 mm | 97% | 1.6 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around -8.5°C with lows near -19.2°C (mean -13.8°C), based on 45 years of NASA POWER data.
January averages 73 mm of rainfall in Joliette, one of the drier months. The wettest on record was 158 mm in 2006.
The hottest January reached 6.2°C in 1995. The coldest dipped to -44°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 4.9°C. Daytime highs moved from -11.6°C to -7.1°C and overnight lows from -22.7°C to -17.4°C over the same span.
January is one of the cooler months of the year in Joliette and one of the drier months, so plan for around -8.5°C daytime highs and -19.2°C at night.
Yes — January is the coldest month of the year in Joliette, averaging -13.8°C.
For January in Joliette, pack warm layers and a jacket for chilly mornings, with typical highs of -8.5°C and lows of -19.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 96% — quite humid.
Average wind speed in January is 1.8 m/s. The windiest January on record averaged 2.2 m/s (2000).
The wettest January on record was 2006 with 158 mm. On average, January sees 73 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 Joliette 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.
