December is one of the cooler months of the year in Auburn, with average highs near 14.4°C and lows around 3.1°C (mean 8.8°C). It is a relatively wet time of year, averaging 126 mm of rainfall and 83% relative humidity across the period.
December is one of the cooler months of the year in Auburn. Across 45 years of records, the warmest December in Auburn was 2015 — when the month averaged 13.9°C — while the coldest was 1989 at 3.3°C. Typical December days reach 14.4°C with nights near 3.1°C. The long-term trend is warming, about 0.6°C per decade.
December is a relatively wet time of year in Auburn, averaging 126 mm of rainfall. The wettest December on record was 2015 with 401 mm, while the driest was 2010 at 34 mm.
Relative humidity in Auburn during December averages 83%. The most humid December was 1986 at 89%, and the least humid was 2010 at 76%.
December receives about 2.5 kWh/m²/day of solar energy in Auburn. The sunniest Decembers were 1985, 2003 and 2006 at 2.9 kWh/m²/day, and the cloudiest were 1986 and 1992 at 2.
Average wind speed in Auburn during December is 0.5 m/s. The windiest Decembers were 2019, 2020 and 2024, among others at 0.5 m/s, while the calmest were 2022, 2023 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.5°C | 8.8°C | 7.9°C | 9.8°C | 9.9°C | +2.4°C |
| Avg High | 13.0°C | 14.3°C | 13.8°C | 15.3°C | 16.0°C | +3°C |
| Avg Low | 2.1°C | 3.2°C | 2.1°C | 4.3°C | 3.9°C | +1.8°C |
| Avg Rain | 139 mm | 110 mm | 117 mm | 165 mm | 83 mm | -55 mm |
December temperatures in Auburn have risen by about 2.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -14.8°C (1989) to a record high of 25.9°C (2013).
Rainfall in December is a relatively wet time of year, averaging 126 mm, with a wettest year of 401 mm.
A quieter season to visit Auburn
If your dates are flexible, the more temperate months of May and October tend to be the most comfortable for visiting Auburn. That said, December — with days averaging 14.4°C and nights around 3.1°C (mean 8.8°C) and higher rainfall (126 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 | 15.8°C | 9.3°C | 2.9°C | 24.7°C | -7.1°C | 62 mm | 77% | 0.4 m/s | — |
| 2024 | 15.8°C | 9.5°C | 3.2°C | 24.0°C | -4.6°C | 129 mm | 79% | 0.5 m/s | 2.8 |
| 2023 | 15.2°C | 9.3°C | 3.4°C | 22.6°C | -3.4°C | 74 mm | 81% | 0.4 m/s | 2.7 |
| 2022 | 15.2°C | 9.9°C | 4.6°C | 24.6°C | -8.6°C | 56 mm | 83% | 0.4 m/s | 2.4 |
| 2021 | 19.5°C | 13.6°C | 7.8°C | 25.5°C | -2.3°C | 113 mm | 87% | 0.4 m/s | 2.3 |
| 2020 | 14.4°C | 7.9°C | 1.4°C | 22.1°C | -5.4°C | 67 mm | 82% | 0.5 m/s | 2.8 |
| 2019 | 15.8°C | 10.6°C | 5.4°C | 22.9°C | -4.1°C | 147 mm | 84% | 0.5 m/s | 2.4 |
| 2018 | 14.3°C | 9.5°C | 4.8°C | 23.0°C | -4.5°C | 220 mm | 88% | 0.5 m/s | 2.2 |
| 2017 | 13.9°C | 8.5°C | 3.1°C | 24.2°C | -5.3°C | 85 mm | 83% | 0.4 m/s | 2.1 |
| 2016 | 15.9°C | 10.3°C | 4.7°C | 23.5°C | -5.0°C | 121 mm | 81% | 0.4 m/s | 2.3 |
| 2015 🔥 🌧️ | 18.8°C | 13.9°C | 8.9°C | 25.4°C | -2.9°C | 401 mm | 89% | 0.4 m/s | 2.3 |
| 2014 | 16.4°C | 10.6°C | 4.9°C | 24.6°C | -2.5°C | 149 mm | 84% | 0.4 m/s | 2.5 |
| 2013 | 15.2°C | 9.6°C | 4.1°C | 25.9°C | -4.6°C | 220 mm | 85% | 0.4 m/s | 2.1 |
| 2012 | 17.1°C | 10.9°C | 4.7°C | 24.6°C | -4.9°C | 172 mm | 81% | 0.5 m/s | 2.3 |
| 2011 | 15.9°C | 10.2°C | 4.5°C | 22.2°C | -3.0°C | 102 mm | 84% | 0.5 m/s | 2.6 |
| 2010 | 9.9°C | 4.0°C | -1.9°C | 20.3°C | -6.8°C | 34 mm | 76% | 0.5 m/s | 2.8 |
| 2009 | 12.0°C | 6.8°C | 1.6°C | 21.1°C | -4.9°C | 271 mm | 87% | 0.5 m/s | 2.1 |
| 2008 | 15.5°C | 9.9°C | 4.2°C | 22.8°C | -5.9°C | 126 mm | 84% | 0.5 m/s | 2.4 |
| 2007 | 16.7°C | 11.0°C | 5.3°C | 25.7°C | -4.2°C | 102 mm | 81% | 0.4 m/s | 2.4 |
| 2006 | 16.3°C | 10.1°C | 3.9°C | 22.8°C | -7.1°C | 84 mm | 82% | 0.5 m/s | 2.9 |
| 2005 | 12.9°C | 6.7°C | 0.6°C | 23.2°C | -5.4°C | 75 mm | 81% | 0.5 m/s | 2.7 |
| 2004 | 13.1°C | 7.0°C | 0.9°C | 22.8°C | -6.7°C | 71 mm | 81% | 0.5 m/s | 2.8 |
| 2003 | 12.6°C | 6.1°C | -0.4°C | 17.8°C | -4.6°C | 79 mm | 81% | 0.5 m/s | 2.9 |
| 2002 | 12.7°C | 7.2°C | 1.6°C | 20.9°C | -5.1°C | 160 mm | 86% | 0.5 m/s | 2.4 |
| 2001 | 16.6°C | 10.6°C | 4.6°C | 24.3°C | -5.2°C | 78 mm | 80% | 0.4 m/s | 2.7 |
| 2000 | 9.1°C | 3.9°C | -1.3°C | 22.3°C | -7.6°C | 127 mm | 81% | 0.5 m/s | 2.4 |
| 1999 | 15.4°C | 8.6°C | 1.9°C | 23.4°C | -5.3°C | 78 mm | 77% | 0.4 m/s | 2.8 |
| 1998 | 16.7°C | 11.3°C | 6.0°C | 25.6°C | -2.9°C | 68 mm | 82% | 0.4 m/s | 2.2 |
| 1997 | 12.1°C | 7.0°C | 1.9°C | 19.4°C | -5.2°C | 147 mm | 89% | 0.4 m/s | 2.5 |
| 1996 | 14.7°C | 8.9°C | 3.1°C | 23.5°C | -7.3°C | 113 mm | 85% | 0.5 m/s | 2.6 |
| 1995 | 12.8°C | 7.1°C | 1.3°C | 23.1°C | -7.6°C | 153 mm | 83% | 0.5 m/s | 2.5 |
| 1994 | 14.9°C | 9.8°C | 4.7°C | 20.7°C | -2.8°C | 87 mm | 87% | 0.4 m/s | 2.4 |
| 1993 | 11.9°C | 6.8°C | 1.7°C | 20.8°C | -5.6°C | 101 mm | 85% | 0.5 m/s | 2.5 |
| 1992 | 12.9°C | 8.1°C | 3.4°C | 21.7°C | -2.8°C | 153 mm | 88% | 0.4 m/s | 2 |
| 1991 | 15.1°C | 9.2°C | 3.4°C | 24.8°C | -5.0°C | 106 mm | 82% | 0.5 m/s | 2.6 |
| 1990 | 16.9°C | 10.9°C | 5.0°C | 24.1°C | -6.4°C | 94 mm | 81% | 0.4 m/s | 2.3 |
| 1989 ❄️ | 8.7°C | 3.3°C | -2.1°C | 18.9°C | -14.8°C | 183 mm | 84% | 0.4 m/s | 2.5 |
| 1988 | 13.8°C | 7.6°C | 1.4°C | 21.7°C | -5.4°C | 86 mm | 84% | 0.4 m/s | 2.6 |
| 1987 | 15.8°C | 10.0°C | 4.2°C | 23.9°C | -5.2°C | 115 mm | 79% | 0.5 m/s | 2.5 |
| 1986 | 12.3°C | 7.5°C | 2.7°C | 21.3°C | -3.3°C | 75 mm | 89% | 0.4 m/s | 2 |
| 1985 | 11.1°C | 5.2°C | -0.6°C | 21.8°C | -7.3°C | 102 mm | 80% | 0.4 m/s | 2.9 |
| 1984 | 18.4°C | 12.4°C | 6.5°C | 23.8°C | -6.7°C | 93 mm | 86% | 0.4 m/s | 2.5 |
| 1983 | 10.5°C | 5.3°C | 0.1°C | 21.9°C | -14.6°C | 216 mm | 83% | 0.5 m/s | — |
| 1982 | 15.3°C | 10.6°C | 5.8°C | 24.5°C | -5.2°C | 197 mm | 88% | 0.5 m/s | — |
| 1981 | 10.9°C | 5.7°C | 0.5°C | 19.5°C | -7.8°C | 180 mm | 78% | 0.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 14.4°C with lows near 3.1°C (mean 8.8°C), based on 45 years of NASA POWER data.
December averages 126 mm of rainfall in Auburn, a relatively wet time of year. The wettest on record was 401 mm in 2015.
The hottest December reached 25.9°C in 2013. The coldest dipped to -14.8°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.5°C. Daytime highs moved from 13.2°C to 16.3°C and overnight lows from 2.5°C to 4.4°C over the same span.
December is one of the cooler months of the year in Auburn and a relatively wet time of year, so plan for around 14.4°C daytime highs and 3.1°C at night.
Not quite — December is the 2nd coolest month in Auburn, averaging 8.8°C.
For December in Auburn, pack warm layers and a jacket for chilly mornings, with typical highs of 14.4°C and lows of 3.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 83% — quite humid.
Average wind speed in December is 0.5 m/s. The windiest December on record averaged 0.5 m/s (1981).
The wettest December on record was 2015 with 401 mm. On average, December sees 126 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 Auburn 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.
