December is one of the cooler months of the year in Cranbrook, with average highs near -6.3°C and lows around -15.4°C (mean -10.8°C). It is about average for rainfall, averaging 52 mm of rainfall and 98% relative humidity across the period.
December is one of the cooler months of the year in Cranbrook. Across 45 years of records, the warmest December in Cranbrook was 2025 — when the month averaged -5.3°C — while the coldest was 1983 at -17.8°C. Typical December days reach -6.3°C with nights near -15.4°C. The long-term trend is warming, about 0.8°C per decade.
December is about average for rainfall in Cranbrook, averaging 52 mm of rainfall. The wettest December on record was 2025 with 128 mm, while the driest was 1985 at 10 mm.
Relative humidity in Cranbrook during December averages 98%. The most humid December was 1993 at 99%, and the least humid was 2021 at 93%.
December receives about 0.9 kWh/m²/day of solar energy in Cranbrook. The sunniest Decembers were 1997, 2009 and 2017, among others at 1 kWh/m²/day, and the cloudiest were 1999 and 2012 at 0.7.
Average wind speed in Cranbrook during December is 0.5 m/s. The windiest Decembers were 1983, 2001 and 2010 at 0.6 m/s, while the calmest were 1997 and 2025 at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -12.3°C | -11.2°C | -10.6°C | -10.9°C | -8.2°C | +4.1°C |
| Avg High | -7.5°C | -6.7°C | -6.0°C | -6.2°C | -4.1°C | +3.4°C |
| Avg Low | -17.2°C | -15.7°C | -15.1°C | -15.5°C | -12.3°C | +4.9°C |
| Avg Rain | 36 mm | 52 mm | 52 mm | 58 mm | 64 mm | +28 mm |
December temperatures in Cranbrook have risen by about 5.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -43.3°C (1983) to a record high of 5.6°C (2021).
Rainfall in December is about average for rainfall, averaging 52 mm, with a wettest year of 128 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.7°C per decade while lows rose 1°C per decade, narrowing the gap between day and night.
A quieter season to visit Cranbrook
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Cranbrook. That said, December — with days averaging -6.3°C and nights around -15.4°C (mean -10.8°C) and moderate rainfall (52 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 🔥 🌧️ | -1.8°C | -5.3°C | -8.9°C | 2.2°C | -21.6°C | 128 mm | 99% | 0.3 m/s | — |
| 2024 | -3.5°C | -7.5°C | -11.4°C | 0.0°C | -17.5°C | 53 mm | 99% | 0.4 m/s | 0.8 |
| 2023 | -2.4°C | -6.3°C | -10.1°C | 4.0°C | -19.7°C | 59 mm | 98% | 0.5 m/s | 0.8 |
| 2022 | -8.4°C | -13.1°C | -17.8°C | 0.1°C | -35.3°C | 45 mm | 98% | 0.5 m/s | 0.9 |
| 2021 | -6.7°C | -11.1°C | -15.5°C | 5.6°C | -28.2°C | 65 mm | 93% | 0.4 m/s | 0.8 |
| 2020 | -1.9°C | -6.0°C | -10.1°C | 2.7°C | -18.2°C | 34 mm | 94% | 0.4 m/s | 0.9 |
| 2019 | -2.6°C | -6.6°C | -10.6°C | 2.4°C | -18.8°C | 47 mm | 97% | 0.4 m/s | 0.8 |
| 2018 | -4.4°C | -9.0°C | -13.5°C | 0.0°C | -25.5°C | 52 mm | 98% | 0.4 m/s | 0.9 |
| 2017 | -8.0°C | -12.5°C | -17.1°C | -0.3°C | -31.5°C | 64 mm | 98% | 0.4 m/s | 1 |
| 2016 | -10.5°C | -15.9°C | -21.2°C | -0.8°C | -35.2°C | 67 mm | 99% | 0.5 m/s | 0.9 |
| 2015 | -5.8°C | -10.4°C | -14.9°C | 1.5°C | -30.3°C | 80 mm | 98% | 0.5 m/s | 0.8 |
| 2014 | -5.7°C | -10.2°C | -14.7°C | 1.5°C | -29.9°C | 51 mm | 99% | 0.5 m/s | 0.9 |
| 2013 | -8.3°C | -13.3°C | -18.3°C | 0.3°C | -37.8°C | 43 mm | 99% | 0.5 m/s | 0.9 |
| 2012 | -6.4°C | -10.6°C | -14.8°C | 0.5°C | -24.9°C | 84 mm | 99% | 0.5 m/s | 0.7 |
| 2011 | -4.5°C | -9.0°C | -13.6°C | 0.1°C | -19.5°C | 32 mm | 98% | 0.5 m/s | 0.9 |
| 2010 | -6.2°C | -11.0°C | -15.9°C | 0.0°C | -28.2°C | 57 mm | 98% | 0.6 m/s | 0.9 |
| 2009 | -9.3°C | -14.3°C | -19.3°C | -0.2°C | -30.4°C | 34 mm | 94% | 0.5 m/s | 1 |
| 2008 | -8.7°C | -13.4°C | -18.1°C | 3.1°C | -33.3°C | 63 mm | 94% | 0.4 m/s | 0.8 |
| 2007 | -6.4°C | -10.9°C | -15.3°C | 0.4°C | -25.4°C | 76 mm | 97% | 0.5 m/s | 0.9 |
| 2006 | -5.5°C | -9.9°C | -14.3°C | 0.0°C | -21.0°C | 56 mm | 99% | 0.5 m/s | 0.9 |
| 2005 | -5.9°C | -10.0°C | -14.2°C | 0.2°C | -23.1°C | 43 mm | 97% | 0.5 m/s | 0.9 |
| 2004 | -3.3°C | -7.7°C | -12.1°C | 1.0°C | -22.7°C | 57 mm | 97% | 0.4 m/s | 0.8 |
| 2003 | -5.7°C | -10.5°C | -15.2°C | 0.0°C | -26.6°C | 39 mm | 98% | 0.5 m/s | 0.9 |
| 2002 | -1.7°C | -6.1°C | -10.4°C | 3.1°C | -16.2°C | 61 mm | 94% | 0.4 m/s | 0.8 |
| 2001 | -6.5°C | -11.7°C | -16.9°C | 0.0°C | -25.2°C | 55 mm | 99% | 0.6 m/s | 0.8 |
| 2000 | -6.7°C | -11.2°C | -15.6°C | 0.3°C | -24.9°C | 33 mm | 95% | 0.5 m/s | 0.9 |
| 1999 | -3.7°C | -8.2°C | -12.7°C | 0.6°C | -19.2°C | 39 mm | 98% | 0.4 m/s | 0.7 |
| 1998 | -6.9°C | -11.4°C | -15.8°C | 0.3°C | -33.2°C | 62 mm | 98% | 0.5 m/s | 0.8 |
| 1997 | -3.0°C | -7.1°C | -11.3°C | 0.7°C | -16.9°C | 20 mm | 94% | 0.3 m/s | 1 |
| 1996 | -10.1°C | -14.4°C | -18.8°C | 0.0°C | -31.6°C | 92 mm | 99% | 0.5 m/s | 0.9 |
| 1995 | -6.4°C | -10.8°C | -15.3°C | 2.0°C | -24.7°C | 67 mm | 96% | 0.4 m/s | 0.9 |
| 1994 | -6.8°C | -11.4°C | -15.9°C | -0.1°C | -30.6°C | 52 mm | 99% | 0.5 m/s | 0.9 |
| 1993 | -5.9°C | -10.2°C | -14.4°C | 0.3°C | -24.6°C | 45 mm | 99% | 0.4 m/s | 0.9 |
| 1992 | -8.9°C | -13.7°C | -18.5°C | -1.3°C | -32.6°C | 47 mm | 97% | 0.5 m/s | 0.9 |
| 1991 | -4.0°C | -8.2°C | -12.3°C | 0.6°C | -19.7°C | 34 mm | 98% | 0.5 m/s | 0.9 |
| 1990 | -11.6°C | -17.0°C | -22.3°C | 0.0°C | -42.0°C | 56 mm | 99% | 0.4 m/s | 0.9 |
| 1989 | -5.0°C | -9.7°C | -14.4°C | 2.0°C | -28.7°C | 32 mm | 97% | 0.4 m/s | 0.8 |
| 1988 | -6.7°C | -11.8°C | -16.9°C | 0.0°C | -28.6°C | 35 mm | 99% | 0.4 m/s | 0.9 |
| 1987 | -5.2°C | -9.5°C | -13.8°C | 2.4°C | -27.0°C | 50 mm | 96% | 0.4 m/s | 0.8 |
| 1986 | -5.8°C | -10.4°C | -15.0°C | -0.5°C | -23.0°C | 18 mm | 99% | 0.5 m/s | 1 |
| 1985 | -6.1°C | -10.5°C | -15.0°C | -0.8°C | -28.7°C | 10 mm | 98% | 0.4 m/s | 0.9 |
| 1984 | -11.3°C | -16.9°C | -22.5°C | -1.3°C | -35.9°C | 39 mm | 99% | 0.5 m/s | 1 |
| 1983 ❄️ | -12.3°C | -17.8°C | -23.3°C | -3.1°C | -43.3°C | 32 mm | 97% | 0.6 m/s | — |
| 1982 | -7.3°C | -11.8°C | -16.2°C | 0.1°C | -26.1°C | 58 mm | 99% | 0.4 m/s | — |
| 1981 | -7.6°C | -12.4°C | -17.3°C | 0.1°C | -28.5°C | 51 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 -6.3°C with lows near -15.4°C (mean -10.8°C), based on 45 years of NASA POWER data.
December averages 52 mm of rainfall in Cranbrook, about average for rainfall. The wettest on record was 128 mm in 2025.
The hottest December reached 5.6°C in 2021. The coldest dipped to -43.3°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 5.2°C. Daytime highs moved from -8.9°C to -4.6°C and overnight lows from -18.9°C to -12.7°C over the same span.
December is one of the cooler months of the year in Cranbrook and about average for rainfall, so plan for around -6.3°C daytime highs and -15.4°C at night.
Yes — December is the coldest month of the year in Cranbrook, averaging -10.8°C.
For December in Cranbrook, pack warm layers and a jacket for chilly mornings, with typical highs of -6.3°C and lows of -15.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 98% — quite humid.
Average wind speed in December is 0.5 m/s. The windiest December on record averaged 0.6 m/s (1983).
The wettest December on record was 2025 with 128 mm. On average, December sees 52 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 Cranbrook 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.
