December is one of the cooler months of the year in Macon, with average highs near 14.1°C and lows around 2.7°C (mean 8.4°C). It is a relatively wet time of year, averaging 109 mm of rainfall and 81% relative humidity across the period.
December is one of the cooler months of the year in Macon. Across 45 years of records, the warmest December in Macon was 2015 — when the month averaged 14.1°C — while the coldest was 1989 at 3°C. Typical December days reach 14.1°C with nights near 2.7°C. The long-term trend is warming, about 0.6°C per decade.
December is a relatively wet time of year in Macon, averaging 109 mm of rainfall. The wettest December on record was 2015 with 307 mm, while the driest was 2010 at 30 mm.
Relative humidity in Macon during December averages 81%. The most humid December was 2015 at 90%, and the least humid was 2001 at 73%.
December receives about 2.5 kWh/m²/day of solar energy in Macon. The sunniest Decembers were 2003 and 2004 at 2.9 kWh/m²/day, and the cloudiest was 1992 at 2.
Average wind speed in Macon during December is 0.4 m/s. The windiest Decembers were 2023, 2024 and 2025, among others at 0.4 m/s, while the calmest were 2017, 2021 and 2022, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.2°C | 8.3°C | 7.9°C | 9.6°C | 9.4°C | +2.2°C |
| Avg High | 12.8°C | 13.9°C | 13.9°C | 15.0°C | 15.4°C | +2.6°C |
| Avg Low | 1.5°C | 2.7°C | 1.9°C | 4.0°C | 3.5°C | +2°C |
| Avg Rain | 114 mm | 88 mm | 106 mm | 147 mm | 75 mm | -40 mm |
December temperatures in Macon have risen by about 2.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -14.7°C (1983) to a record high of 27.1°C (1991).
Rainfall in December is a relatively wet time of year, averaging 109 mm, with a wettest year of 307 mm.
A quieter season to visit Macon
If your dates are flexible, the more temperate months of May and September tend to be the most comfortable for visiting Macon. That said, December — with days averaging 14.1°C and nights around 2.7°C (mean 8.4°C) and higher rainfall (109 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 | 15.6°C | 9.2°C | 2.8°C | 25.9°C | -7.0°C | 54 mm | 74% | 0.4 m/s | — |
| 2024 | 15.1°C | 8.8°C | 2.5°C | 23.1°C | -4.4°C | 90 mm | 77% | 0.4 m/s | 2.8 |
| 2023 | 15.4°C | 9.3°C | 3.3°C | 20.6°C | -3.8°C | 60 mm | 77% | 0.4 m/s | 2.7 |
| 2022 | 13.9°C | 8.7°C | 3.4°C | 25.1°C | -9.9°C | 67 mm | 83% | 0.3 m/s | 2.4 |
| 2021 | 18.6°C | 12.9°C | 7.2°C | 25.1°C | -2.2°C | 112 mm | 86% | 0.3 m/s | 2.5 |
| 2020 | 14.0°C | 7.7°C | 1.5°C | 20.9°C | -5.7°C | 66 mm | 81% | 0.4 m/s | 2.7 |
| 2019 | 15.0°C | 9.7°C | 4.4°C | 23.3°C | -3.7°C | 188 mm | 84% | 0.4 m/s | 2.5 |
| 2018 | 13.7°C | 9.0°C | 4.3°C | 22.9°C | -4.6°C | 194 mm | 89% | 0.4 m/s | 2.2 |
| 2017 | 13.7°C | 8.4°C | 3.0°C | 24.1°C | -4.8°C | 79 mm | 81% | 0.3 m/s | 2.3 |
| 2016 | 15.5°C | 9.8°C | 4.2°C | 23.3°C | -4.8°C | 120 mm | 80% | 0.3 m/s | 2.5 |
| 2015 🔥 🌧️ | 19.1°C | 14.1°C | 9.1°C | 24.9°C | -3.1°C | 307 mm | 90% | 0.3 m/s | 2.3 |
| 2014 | 15.9°C | 10.2°C | 4.5°C | 22.8°C | -3.1°C | 123 mm | 84% | 0.3 m/s | 2.5 |
| 2013 | 15.1°C | 9.7°C | 4.2°C | 25.0°C | -4.2°C | 204 mm | 84% | 0.3 m/s | 2.2 |
| 2012 | 16.5°C | 10.7°C | 4.9°C | 24.1°C | -2.6°C | 137 mm | 79% | 0.4 m/s | 2.3 |
| 2011 | 16.4°C | 10.4°C | 4.3°C | 23.4°C | -1.5°C | 88 mm | 81% | 0.4 m/s | 2.7 |
| 2010 | 9.4°C | 3.5°C | -2.5°C | 18.8°C | -7.0°C | 30 mm | 73% | 0.4 m/s | 2.8 |
| 2009 | 11.6°C | 6.6°C | 1.6°C | 22.5°C | -3.3°C | 244 mm | 87% | 0.3 m/s | 2.2 |
| 2008 | 15.5°C | 9.7°C | 4.0°C | 23.6°C | -6.2°C | 119 mm | 84% | 0.3 m/s | 2.6 |
| 2007 | 17.1°C | 11.0°C | 4.8°C | 26.2°C | -4.3°C | 153 mm | 78% | 0.3 m/s | 2.6 |
| 2006 | 16.9°C | 10.6°C | 4.2°C | 23.4°C | -7.1°C | 100 mm | 79% | 0.4 m/s | 2.7 |
| 2005 | 12.9°C | 6.6°C | 0.3°C | 23.5°C | -5.4°C | 85 mm | 79% | 0.4 m/s | 2.6 |
| 2004 | 13.0°C | 7.0°C | 1.0°C | 23.4°C | -6.6°C | 38 mm | 80% | 0.4 m/s | 2.9 |
| 2003 | 12.7°C | 6.0°C | -0.7°C | 18.6°C | -5.4°C | 55 mm | 76% | 0.4 m/s | 2.9 |
| 2002 | 12.4°C | 6.8°C | 1.2°C | 18.7°C | -4.4°C | 134 mm | 85% | 0.4 m/s | 2.5 |
| 2001 | 17.9°C | 11.3°C | 4.6°C | 25.6°C | -5.3°C | 45 mm | 73% | 0.3 m/s | 2.8 |
| 2000 | 8.5°C | 3.2°C | -2.0°C | 18.8°C | -7.2°C | 85 mm | 79% | 0.4 m/s | 2.5 |
| 1999 | 15.0°C | 8.3°C | 1.6°C | 22.8°C | -4.7°C | 57 mm | 76% | 0.4 m/s | 2.8 |
| 1998 | 17.0°C | 11.3°C | 5.5°C | 26.3°C | -3.3°C | 50 mm | 77% | 0.4 m/s | 2.4 |
| 1997 | 12.1°C | 7.0°C | 1.9°C | 20.5°C | -5.2°C | 177 mm | 88% | 0.3 m/s | 2.6 |
| 1996 | 13.8°C | 8.1°C | 2.4°C | 23.5°C | -8.2°C | 84 mm | 84% | 0.4 m/s | 2.7 |
| 1995 | 12.2°C | 6.4°C | 0.7°C | 21.2°C | -7.5°C | 100 mm | 82% | 0.4 m/s | 2.6 |
| 1994 | 13.8°C | 8.9°C | 4.0°C | 21.1°C | -3.7°C | 71 mm | 87% | 0.4 m/s | 2.3 |
| 1993 | 11.7°C | 6.5°C | 1.3°C | 20.7°C | -5.8°C | 75 mm | 83% | 0.4 m/s | 2.6 |
| 1992 | 11.8°C | 7.1°C | 2.3°C | 21.5°C | -2.7°C | 86 mm | 88% | 0.3 m/s | 2 |
| 1991 | 15.7°C | 9.5°C | 3.3°C | 27.1°C | -5.1°C | 100 mm | 74% | 0.4 m/s | 2.7 |
| 1990 | 15.8°C | 10.1°C | 4.4°C | 23.1°C | -6.0°C | 78 mm | 83% | 0.4 m/s | 2.1 |
| 1989 ❄️ | 8.1°C | 3.0°C | -2.2°C | 17.9°C | -14.0°C | 181 mm | 84% | 0.4 m/s | 2.6 |
| 1988 | 13.8°C | 7.3°C | 0.7°C | 21.6°C | -5.9°C | 45 mm | 79% | 0.3 m/s | 2.8 |
| 1987 | 15.6°C | 9.6°C | 3.5°C | 24.4°C | -4.5°C | 64 mm | 76% | 0.3 m/s | 2.4 |
| 1986 | 11.9°C | 7.0°C | 2.2°C | 20.1°C | -4.3°C | 87 mm | 88% | 0.3 m/s | 2.1 |
| 1985 | 11.1°C | 5.1°C | -0.9°C | 21.1°C | -7.8°C | 66 mm | 80% | 0.3 m/s | 2.8 |
| 1984 | 18.4°C | 12.1°C | 5.8°C | 24.5°C | -6.8°C | 58 mm | 81% | 0.4 m/s | 2.6 |
| 1983 | 10.6°C | 5.2°C | -0.3°C | 21.7°C | -14.7°C | 163 mm | 82% | 0.4 m/s | — |
| 1982 | 15.4°C | 10.4°C | 5.4°C | 24.7°C | -5.6°C | 153 mm | 88% | 0.3 m/s | — |
| 1981 | 10.3°C | 5.0°C | -0.3°C | 21.7°C | -7.6°C | 213 mm | 78% | 0.4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 14.1°C with lows near 2.7°C (mean 8.4°C), based on 45 years of NASA POWER data.
December averages 109 mm of rainfall in Macon, a relatively wet time of year. The wettest on record was 307 mm in 2015.
The hottest December reached 27.1°C in 1991. The coldest dipped to -14.7°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.2°C. Daytime highs moved from 13.2°C to 15.7°C and overnight lows from 1.9°C to 3.8°C over the same span.
December is one of the cooler months of the year in Macon and a relatively wet time of year, so plan for around 14.1°C daytime highs and 2.7°C at night.
Not quite — December is the 2nd coolest month in Macon, averaging 8.4°C.
For December in Macon, pack warm layers and a jacket for chilly mornings, with typical highs of 14.1°C and lows of 2.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 81% — quite humid.
Average wind speed in December is 0.4 m/s. The windiest December on record averaged 0.4 m/s (1981).
The wettest December on record was 2015 with 307 mm. On average, December sees 109 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 Macon 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.
