December is one of the cooler months of the year in Campbellton, with average highs near -5.7°C and lows around -13.6°C (mean -9.6°C). It is about average for rainfall, averaging 86 mm of rainfall and 96% relative humidity across the period.
December is one of the cooler months of the year in Campbellton. Across 45 years of records, the warmest December in Campbellton was 2010 — when the month averaged -3.6°C — while the coldest was 1989 at -17.5°C. Typical December days reach -5.7°C with nights near -13.6°C. The long-term trend is warming, about 0.8°C per decade.
December is about average for rainfall in Campbellton, averaging 86 mm of rainfall. The wettest December on record was 2005 with 147 mm, while the driest was 2001 at 37 mm.
Relative humidity in Campbellton during December averages 96%. The most humid Decembers were 2007, 2016 and 2022, among others at 100%, and the least humid was 2001 at 88%.
December receives about 0.8 kWh/m²/day of solar energy in Campbellton. The sunniest Decembers were 1991, 1995 and 2018, among others at 1 kWh/m²/day, and the cloudiest were 1984, 2010 and 2015 at 0.7.
Average wind speed in Campbellton during December is 0.6 m/s. The windiest Decembers were 2012, 2017 and 2025, among others at 0.7 m/s, while the calmest were 2015, 2016 and 2022, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -11.8°C | -9.9°C | -9.4°C | -9.0°C | -7.5°C | +4.3°C |
| Avg High | -7.6°C | -5.7°C | -5.6°C | -5.3°C | -3.5°C | +4.1°C |
| Avg Low | -15.9°C | -14.1°C | -13.2°C | -12.7°C | -11.4°C | +4.5°C |
| Avg Rain | 80 mm | 75 mm | 90 mm | 95 mm | 89 mm | +10 mm |
December temperatures in Campbellton have risen by about 2.9°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -33.9°C (1993) to a record high of 13.3°C (2023).
Rainfall in December is about average for rainfall, averaging 86 mm, with a wettest year of 147 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 Campbellton
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Campbellton. That said, December — with days averaging -5.7°C and nights around -13.6°C (mean -9.6°C) and higher rainfall (86 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 | -7.0°C | -11.0°C | -14.9°C | 9.3°C | -21.7°C | 69 mm | 94% | 0.7 m/s | — |
| 2024 | -3.0°C | -6.8°C | -10.6°C | 9.6°C | -19.4°C | 85 mm | 91% | 0.6 m/s | 0.9 |
| 2023 | -1.4°C | -5.5°C | -9.7°C | 13.3°C | -15.9°C | 72 mm | 93% | 0.6 m/s | 0.9 |
| 2022 | -3.7°C | -7.5°C | -11.2°C | 0.9°C | -22.6°C | 123 mm | 100% | 0.5 m/s | 0.9 |
| 2021 | -4.4°C | -8.7°C | -12.9°C | 2.5°C | -20.7°C | 89 mm | 95% | 0.6 m/s | 0.9 |
| 2020 | -1.3°C | -5.3°C | -9.3°C | 12.4°C | -22.8°C | 97 mm | 94% | 0.6 m/s | 0.8 |
| 2019 | -5.3°C | -9.2°C | -13.1°C | 3.9°C | -18.8°C | 50 mm | 94% | 0.6 m/s | 0.9 |
| 2018 | -7.5°C | -11.2°C | -14.9°C | 1.4°C | -22.6°C | 80 mm | 97% | 0.6 m/s | 1 |
| 2017 | -8.8°C | -12.8°C | -16.9°C | 0.7°C | -26.3°C | 100 mm | 99% | 0.7 m/s | 0.9 |
| 2016 | -7.0°C | -11.6°C | -16.1°C | 0.0°C | -32.8°C | 95 mm | 100% | 0.5 m/s | 0.8 |
| 2015 | -2.3°C | -5.2°C | -8.0°C | 3.6°C | -18.4°C | 103 mm | 96% | 0.5 m/s | 0.7 |
| 2014 | -4.0°C | -7.6°C | -11.2°C | 2.6°C | -23.5°C | 136 mm | 95% | 0.6 m/s | 0.8 |
| 2013 | -9.4°C | -13.2°C | -16.9°C | 0.5°C | -25.2°C | 83 mm | 98% | 0.6 m/s | 0.8 |
| 2012 | -3.7°C | -7.4°C | -11.1°C | 3.9°C | -19.7°C | 92 mm | 96% | 0.7 m/s | 0.8 |
| 2011 | -4.3°C | -8.5°C | -12.8°C | 3.1°C | -25.0°C | 90 mm | 97% | 0.6 m/s | 0.8 |
| 2010 🔥 | -1.0°C | -3.6°C | -6.1°C | 11.9°C | -13.8°C | 120 mm | 93% | 0.7 m/s | 0.7 |
| 2009 | -5.4°C | -8.7°C | -12.0°C | 0.1°C | -21.8°C | 87 mm | 99% | 0.7 m/s | 0.8 |
| 2008 | -6.1°C | -10.6°C | -15.1°C | 0.9°C | -24.2°C | 127 mm | 98% | 0.7 m/s | 0.8 |
| 2007 | -7.7°C | -11.8°C | -15.9°C | 0.2°C | -23.5°C | 81 mm | 100% | 0.6 m/s | 0.9 |
| 2006 | -3.8°C | -7.4°C | -11.0°C | 1.8°C | -20.7°C | 64 mm | 94% | 0.5 m/s | 0.8 |
| 2005 🌧️ | -5.4°C | -8.4°C | -11.5°C | 5.3°C | -22.7°C | 147 mm | 92% | 0.7 m/s | 0.9 |
| 2004 | -7.6°C | -12.7°C | -17.8°C | 2.0°C | -25.4°C | 109 mm | 98% | 0.6 m/s | 0.9 |
| 2003 | -4.1°C | -7.8°C | -11.4°C | 2.5°C | -21.1°C | 99 mm | 94% | 0.6 m/s | 0.8 |
| 2002 | -6.6°C | -10.4°C | -14.3°C | 0.2°C | -25.0°C | 61 mm | 100% | 0.5 m/s | 0.9 |
| 2001 | -2.0°C | -5.3°C | -8.5°C | 5.4°C | -15.4°C | 37 mm | 88% | 0.5 m/s | 0.9 |
| 2000 | -7.1°C | -11.0°C | -14.9°C | 7.2°C | -24.8°C | 88 mm | 95% | 0.7 m/s | 0.9 |
| 1999 | -5.0°C | -8.5°C | -12.0°C | 3.5°C | -27.2°C | 76 mm | 96% | 0.5 m/s | 0.8 |
| 1998 | -4.7°C | -9.3°C | -13.9°C | 1.6°C | -31.2°C | 61 mm | 94% | 0.6 m/s | 0.9 |
| 1997 | -6.6°C | -11.1°C | -15.7°C | 0.4°C | -27.9°C | 62 mm | 98% | 0.5 m/s | 0.9 |
| 1996 | -2.3°C | -6.0°C | -9.8°C | 5.3°C | -27.6°C | 92 mm | 95% | 0.6 m/s | 0.8 |
| 1995 | -7.8°C | -11.8°C | -15.8°C | 0.0°C | -25.4°C | 56 mm | 100% | 0.5 m/s | 1 |
| 1994 | -6.0°C | -10.2°C | -14.5°C | 1.1°C | -28.5°C | 59 mm | 98% | 0.6 m/s | 0.8 |
| 1993 | -5.0°C | -8.9°C | -12.7°C | 7.7°C | -33.9°C | 99 mm | 94% | 0.5 m/s | 0.8 |
| 1992 | -5.3°C | -9.2°C | -13.0°C | 2.9°C | -26.2°C | 58 mm | 95% | 0.5 m/s | 0.8 |
| 1991 | -8.3°C | -13.0°C | -17.7°C | 4.7°C | -27.0°C | 72 mm | 96% | 0.5 m/s | 1 |
| 1990 | -5.6°C | -10.9°C | -16.1°C | 0.1°C | -29.8°C | 117 mm | 100% | 0.5 m/s | 0.8 |
| 1989 ❄️ | -13.5°C | -17.5°C | -21.4°C | -2.7°C | -31.4°C | 56 mm | 99% | 0.6 m/s | 1 |
| 1988 | -7.7°C | -11.9°C | -16.1°C | 0.9°C | -25.7°C | 54 mm | 95% | 0.6 m/s | 0.8 |
| 1987 | -6.8°C | -10.5°C | -14.3°C | 2.4°C | -24.6°C | 90 mm | 96% | 0.6 m/s | 0.8 |
| 1986 | -7.1°C | -11.9°C | -16.7°C | 0.1°C | -26.0°C | 63 mm | 100% | 0.5 m/s | 0.8 |
| 1985 | -9.1°C | -13.6°C | -18.0°C | 1.1°C | -28.1°C | 49 mm | 95% | 0.6 m/s | 0.9 |
| 1984 | -5.6°C | -10.7°C | -15.9°C | 2.1°C | -28.8°C | 70 mm | 96% | 0.6 m/s | 0.7 |
| 1983 | -8.8°C | -12.8°C | -16.8°C | 0.1°C | -25.9°C | 125 mm | 100% | 0.6 m/s | — |
| 1982 | -5.3°C | -9.3°C | -13.3°C | 5.4°C | -24.4°C | 84 mm | 90% | 0.6 m/s | — |
| 1981 | -4.3°C | -7.6°C | -10.8°C | 0.7°C | -24.8°C | 125 mm | 99% | 0.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -5.7°C with lows near -13.6°C (mean -9.6°C), based on 45 years of NASA POWER data.
December averages 86 mm of rainfall in Campbellton, about average for rainfall. The wettest on record was 147 mm in 2005.
The hottest December reached 13.3°C in 2023. The coldest dipped to -33.9°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.9°C. Daytime highs moved from -6.6°C to -3.9°C and overnight lows from -15°C to -11.9°C over the same span.
December is one of the cooler months of the year in Campbellton and about average for rainfall, so plan for around -5.7°C daytime highs and -13.6°C at night.
Not quite — December is the 3rd coolest month in Campbellton, averaging -9.6°C.
For December in Campbellton, pack warm layers and a jacket for chilly mornings, with typical highs of -5.7°C and lows of -13.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 96% — quite humid.
Average wind speed in December is 0.6 m/s. The windiest December on record averaged 0.7 m/s (2000).
The wettest December on record was 2005 with 147 mm. On average, December sees 86 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 Campbellton 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.
