December is one of the cooler months of the year in Griffin, with average highs near 13.7°C and lows around 2.4°C (mean 8°C). It is a relatively wet time of year, averaging 114 mm of rainfall and 82% relative humidity across the period.
December is one of the cooler months of the year in Griffin. Across 45 years of records, the warmest December in Griffin was 2015 — when the month averaged 13.6°C — while the coldest was 1989 at 2.6°C. Typical December days reach 13.7°C with nights near 2.4°C. The long-term trend is warming, about 0.6°C per decade.
December is a relatively wet time of year in Griffin, averaging 114 mm of rainfall. The wettest December on record was 2015 with 355 mm, while the driest was 2010 at 32 mm.
Relative humidity in Griffin during December averages 82%. The most humid December was 2015 at 90%, and the least humid was 2025 at 74%.
December receives about 2.4 kWh/m²/day of solar energy in Griffin. The sunniest December was 2006 at 2.8 kWh/m²/day, and the cloudiest was 1992 at 1.9.
Average wind speed in Griffin during December is 0.1 m/s. The windiest December was 2006 at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.8°C | 8.0°C | 7.5°C | 9.2°C | 9.2°C | +2.4°C |
| Avg High | 12.3°C | 13.5°C | 13.3°C | 14.6°C | 15.2°C | +2.9°C |
| Avg Low | 1.3°C | 2.5°C | 1.6°C | 3.7°C | 3.2°C | +1.9°C |
| Avg Rain | 119 mm | 89 mm | 109 mm | 159 mm | 79 mm | -40 mm |
December temperatures in Griffin have risen by about 2.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -15.6°C (1983) to a record high of 26.2°C (1991).
Rainfall in December is a relatively wet time of year, averaging 114 mm, with a wettest year of 355 mm.
A quieter season to visit Griffin
If your dates are flexible, the more temperate months of May and September tend to be the most comfortable for visiting Griffin. That said, December — with days averaging 13.7°C and nights around 2.4°C (mean 8°C) and higher rainfall (114 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 | 15.4°C | 8.9°C | 2.5°C | 25.6°C | -7.1°C | 43 mm | 74% | 0.1 m/s | — |
| 2024 | 14.7°C | 8.6°C | 2.5°C | 22.7°C | -5.3°C | 100 mm | 78% | 0.1 m/s | 2.6 |
| 2023 | 15.0°C | 8.9°C | 2.8°C | 22.0°C | -4.1°C | 74 mm | 78% | 0.1 m/s | 2.5 |
| 2022 | 13.8°C | 8.5°C | 3.2°C | 24.6°C | -10.0°C | 72 mm | 84% | 0.1 m/s | 2.2 |
| 2021 | 18.5°C | 12.8°C | 7.1°C | 24.7°C | -2.5°C | 115 mm | 86% | 0.1 m/s | 2.1 |
| 2020 | 13.5°C | 7.3°C | 1.2°C | 20.9°C | -5.8°C | 70 mm | 82% | 0.1 m/s | 2.7 |
| 2019 | 14.5°C | 9.4°C | 4.3°C | 21.9°C | -4.2°C | 183 mm | 85% | 0.1 m/s | 2.3 |
| 2018 | 13.3°C | 8.7°C | 4.1°C | 22.6°C | -4.8°C | 232 mm | 88% | 0.1 m/s | 2.1 |
| 2017 | 13.4°C | 8.0°C | 2.6°C | 23.6°C | -5.1°C | 74 mm | 81% | 0.1 m/s | 2.2 |
| 2016 | 15.0°C | 9.3°C | 3.6°C | 22.8°C | -5.4°C | 114 mm | 81% | 0.1 m/s | 2.3 |
| 2015 🔥 🌧️ | 18.6°C | 13.6°C | 8.7°C | 25.1°C | -3.5°C | 355 mm | 90% | 0.1 m/s | 2.2 |
| 2014 | 15.5°C | 9.8°C | 4.1°C | 22.7°C | -3.0°C | 122 mm | 85% | 0.1 m/s | 2.3 |
| 2013 | 14.7°C | 9.2°C | 3.8°C | 25.0°C | -4.6°C | 215 mm | 84% | 0.1 m/s | 2.1 |
| 2012 | 16.1°C | 10.3°C | 4.5°C | 23.8°C | -3.9°C | 152 mm | 80% | 0.1 m/s | 2.2 |
| 2011 | 16.0°C | 10.1°C | 4.1°C | 23.0°C | -2.9°C | 109 mm | 82% | 0.1 m/s | 2.5 |
| 2010 | 9.0°C | 3.2°C | -2.5°C | 18.1°C | -7.2°C | 32 mm | 75% | 0.1 m/s | 2.5 |
| 2009 | 11.3°C | 6.2°C | 1.2°C | 21.3°C | -3.5°C | 266 mm | 87% | 0.1 m/s | 2 |
| 2008 | 14.9°C | 9.2°C | 3.6°C | 23.1°C | -7.1°C | 120 mm | 84% | 0.1 m/s | 2.1 |
| 2007 | 16.4°C | 10.6°C | 4.7°C | 25.6°C | -4.0°C | 136 mm | 79% | 0.1 m/s | 2.3 |
| 2006 | 16.3°C | 9.9°C | 3.6°C | 22.9°C | -7.0°C | 87 mm | 80% | 0.2 m/s | 2.8 |
| 2005 | 12.2°C | 6.1°C | 0.0°C | 22.6°C | -5.6°C | 81 mm | 80% | 0.1 m/s | 2.6 |
| 2004 | 12.6°C | 6.6°C | 0.6°C | 22.9°C | -6.8°C | 59 mm | 81% | 0.1 m/s | 2.7 |
| 2003 | 12.3°C | 5.7°C | -0.9°C | 18.2°C | -5.2°C | 65 mm | 78% | 0.1 m/s | 2.7 |
| 2002 | 12.0°C | 6.6°C | 1.2°C | 18.4°C | -5.0°C | 131 mm | 86% | 0.1 m/s | 2.3 |
| 2001 | 17.2°C | 10.7°C | 4.2°C | 25.0°C | -5.9°C | 48 mm | 74% | 0.1 m/s | 2.6 |
| 2000 | 8.1°C | 2.9°C | -2.2°C | 18.7°C | -7.8°C | 94 mm | 80% | 0.1 m/s | 2.3 |
| 1999 | 14.6°C | 8.0°C | 1.5°C | 22.0°C | -5.6°C | 65 mm | 76% | 0.1 m/s | 2.7 |
| 1998 | 16.5°C | 10.8°C | 5.0°C | 25.9°C | -3.1°C | 56 mm | 78% | 0.1 m/s | 2.1 |
| 1997 | 11.8°C | 6.6°C | 1.3°C | 20.7°C | -5.7°C | 171 mm | 88% | 0.1 m/s | 2.4 |
| 1996 | 13.5°C | 8.0°C | 2.4°C | 23.3°C | -7.8°C | 79 mm | 84% | 0.1 m/s | 2.4 |
| 1995 | 11.8°C | 6.3°C | 0.7°C | 21.5°C | -8.2°C | 106 mm | 82% | 0.1 m/s | 2.5 |
| 1994 | 13.6°C | 8.7°C | 3.7°C | 20.8°C | -3.6°C | 63 mm | 87% | 0.1 m/s | 2.2 |
| 1993 | 11.3°C | 6.2°C | 1.1°C | 20.4°C | -5.9°C | 77 mm | 84% | 0.1 m/s | 2.4 |
| 1992 | 11.6°C | 6.9°C | 2.2°C | 21.2°C | -3.1°C | 100 mm | 88% | 0.1 m/s | 1.9 |
| 1991 | 14.9°C | 8.9°C | 3.0°C | 26.2°C | -5.4°C | 93 mm | 77% | 0.1 m/s | 2.5 |
| 1990 | 15.7°C | 10.0°C | 4.3°C | 23.1°C | -6.3°C | 83 mm | 82% | 0.1 m/s | 2.1 |
| 1989 ❄️ | 7.8°C | 2.6°C | -2.6°C | 17.5°C | -14.9°C | 178 mm | 84% | 0.1 m/s | 2.4 |
| 1988 | 13.3°C | 6.9°C | 0.6°C | 21.1°C | -6.0°C | 49 mm | 80% | 0.1 m/s | 2.6 |
| 1987 | 15.2°C | 9.3°C | 3.4°C | 24.1°C | -4.9°C | 80 mm | 77% | 0.1 m/s | 2.3 |
| 1986 | 11.6°C | 6.7°C | 1.8°C | 19.9°C | -4.6°C | 78 mm | 88% | 0.1 m/s | 2 |
| 1985 | 10.6°C | 4.8°C | -1.1°C | 20.5°C | -7.9°C | 69 mm | 79% | 0.1 m/s | 2.6 |
| 1984 | 17.9°C | 11.7°C | 5.5°C | 24.0°C | -7.1°C | 67 mm | 83% | 0.1 m/s | 2.4 |
| 1983 | 10.0°C | 4.7°C | -0.7°C | 20.8°C | -15.6°C | 182 mm | 82% | 0.1 m/s | — |
| 1982 | 14.8°C | 10.0°C | 5.3°C | 24.1°C | -5.7°C | 164 mm | 88% | 0.1 m/s | — |
| 1981 | 9.7°C | 4.5°C | -0.6°C | 20.7°C | -7.9°C | 200 mm | 78% | 0.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 13.7°C with lows near 2.4°C (mean 8°C), based on 45 years of NASA POWER data.
December averages 114 mm of rainfall in Griffin, a relatively wet time of year. The wettest on record was 355 mm in 2015.
The hottest December reached 26.2°C in 1991. The coldest dipped to -15.6°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.4°C. Daytime highs moved from 12.6°C to 15.5°C and overnight lows from 1.7°C to 3.6°C over the same span.
December is one of the cooler months of the year in Griffin and a relatively wet time of year, so plan for around 13.7°C daytime highs and 2.4°C at night.
Not quite — December is the 2nd coolest month in Griffin, averaging 8°C.
For December in Griffin, pack warm layers and a jacket for chilly mornings, with typical highs of 13.7°C and lows of 2.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 82% — quite humid.
Average wind speed in December is 0.1 m/s. The windiest December on record averaged 0.2 m/s (2006).
The wettest December on record was 2015 with 355 mm. On average, December sees 114 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 Griffin 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.
