December is one of the cooler months of the year in Collierville, with average highs near 10.6°C and lows around 0.5°C (mean 5.6°C). It is a relatively wet time of year, averaging 142 mm of rainfall and 84% relative humidity across the period.
December is one of the cooler months of the year in Collierville. Across 45 years of records, the warmest December in Collierville was 2021 — when the month averaged 12.2°C — while the coldest was 1983 at -1.3°C. Typical December days reach 10.6°C with nights near 0.5°C. The long-term trend is warming, about 0.8°C per decade.
December is a relatively wet time of year in Collierville, averaging 142 mm of rainfall. The wettest December on record was 1982 with 366 mm, while the driest was 2025 at 42 mm.
Relative humidity in Collierville during December averages 84%. The most humid December was 1984 at 90%, and the least humid was 2023 at 73%.
December receives about 2.1 kWh/m²/day of solar energy in Collierville. The sunniest Decembers were 1985 and 2004 at 2.5 kWh/m²/day, and the cloudiest were 1992 and 2014 at 1.6.
Average wind speed in Collierville during December is 1.8 m/s. The windiest December was 2008 at 2.3 m/s, while the calmest were 1986 and 1994 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.9°C | 5.8°C | 4.7°C | 6.4°C | 7.5°C | +3.6°C |
| Avg High | 8.8°C | 10.8°C | 9.8°C | 11.4°C | 13.0°C | +4.2°C |
| Avg Low | -1.0°C | 0.7°C | -0.4°C | 1.4°C | 2.0°C | +3°C |
| Avg Rain | 154 mm | 150 mm | 142 mm | 136 mm | 118 mm | -36 mm |
December temperatures in Collierville have risen by about 3.9°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -23.8°C (1983) to a record high of 25.1°C (1998).
Rainfall in December is a relatively wet time of year, averaging 142 mm, with a wettest year of 366 mm.
A quieter season to visit Collierville
If your dates are flexible, the more temperate months of September and May tend to be the most comfortable for visiting Collierville. That said, December — with days averaging 10.6°C and nights around 0.5°C (mean 5.6°C) and higher rainfall (142 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 | 11.8°C | 6.2°C | 0.6°C | 23.2°C | -8.6°C | 42 mm | 81% | 1.8 m/s | — |
| 2024 | 12.3°C | 7.3°C | 2.2°C | 19.5°C | -6.0°C | 192 mm | 82% | 1.8 m/s | 2.1 |
| 2023 | 14.1°C | 8.0°C | 1.9°C | 22.8°C | -5.3°C | 57 mm | 73% | 1.6 m/s | 2.4 |
| 2022 | 10.9°C | 6.1°C | 1.2°C | 22.9°C | -14.8°C | 168 mm | 85% | 1.7 m/s | 1.8 |
| 2021 🔥 | 17.9°C | 12.2°C | 6.5°C | 23.7°C | -4.0°C | 103 mm | 83% | 1.9 m/s | 2 |
| 2020 | 10.9°C | 5.3°C | -0.3°C | 20.1°C | -6.8°C | 147 mm | 82% | 1.7 m/s | 2.2 |
| 2019 | 12.8°C | 7.9°C | 3.0°C | 19.8°C | -4.3°C | 140 mm | 88% | 1.6 m/s | 2 |
| 2018 | 10.9°C | 6.3°C | 1.8°C | 22.7°C | -6.3°C | 163 mm | 87% | 1.7 m/s | 1.9 |
| 2017 | 10.4°C | 5.2°C | 0.0°C | 20.7°C | -11.1°C | 163 mm | 76% | 1.7 m/s | 2.3 |
| 2016 | 10.8°C | 5.5°C | 0.2°C | 23.7°C | -12.9°C | 154 mm | 80% | 1.8 m/s | 2.1 |
| 2015 | 15.8°C | 10.8°C | 5.8°C | 24.9°C | -3.0°C | 150 mm | 86% | 1.8 m/s | 2.3 |
| 2014 | 10.9°C | 6.3°C | 1.7°C | 18.7°C | -4.7°C | 88 mm | 86% | 1.5 m/s | 1.6 |
| 2013 | 9.3°C | 4.5°C | -0.4°C | 22.2°C | -8.3°C | 131 mm | 85% | 1.7 m/s | 2 |
| 2012 | 13.6°C | 8.3°C | 3.1°C | 22.6°C | -6.5°C | 139 mm | 83% | 1.9 m/s | 1.9 |
| 2011 | 11.4°C | 6.3°C | 1.2°C | 18.1°C | -4.8°C | 182 mm | 86% | 1.5 m/s | 2.1 |
| 2010 | 7.7°C | 2.7°C | -2.4°C | 18.8°C | -10.0°C | 51 mm | 79% | 1.9 m/s | 2.1 |
| 2009 | 7.8°C | 3.5°C | -0.8°C | 17.1°C | -6.3°C | 144 mm | 87% | 1.8 m/s | 2 |
| 2008 | 9.9°C | 4.6°C | -0.7°C | 22.2°C | -9.2°C | 220 mm | 80% | 2.3 m/s | 2 |
| 2007 | 13.2°C | 7.9°C | 2.6°C | 23.6°C | -4.4°C | 137 mm | 84% | 1.7 m/s | 2 |
| 2006 | 12.4°C | 7.0°C | 1.6°C | 21.5°C | -7.7°C | 127 mm | 83% | 1.8 m/s | 2.4 |
| 2005 | 9.4°C | 3.8°C | -1.7°C | 19.3°C | -7.4°C | 72 mm | 78% | 1.7 m/s | 2.2 |
| 2004 | 9.4°C | 4.1°C | -1.2°C | 20.4°C | -15.1°C | 151 mm | 87% | 1.8 m/s | 2.5 |
| 2003 | 10.2°C | 4.6°C | -1.1°C | 17.0°C | -4.8°C | 88 mm | 81% | 1.9 m/s | 2.2 |
| 2002 | 9.3°C | 4.9°C | 0.6°C | 18.0°C | -5.9°C | 210 mm | 89% | 1.9 m/s | 2 |
| 2001 | 12.0°C | 7.2°C | 2.5°C | 21.4°C | -5.0°C | 191 mm | 88% | 1.6 m/s | 2.2 |
| 2000 | 4.5°C | -0.6°C | -5.7°C | 16.9°C | -12.4°C | 79 mm | 82% | 1.8 m/s | 2.2 |
| 1999 | 12.0°C | 6.2°C | 0.4°C | 21.7°C | -5.8°C | 105 mm | 78% | 1.8 m/s | 2.3 |
| 1998 | 11.3°C | 6.2°C | 1.1°C | 25.1°C | -9.5°C | 160 mm | 83% | 1.8 m/s | 2 |
| 1997 | 8.8°C | 4.1°C | -0.5°C | 16.1°C | -5.9°C | 98 mm | 85% | 1.6 m/s | 2 |
| 1996 | 11.1°C | 6.2°C | 1.4°C | 21.3°C | -10.4°C | 133 mm | 88% | 1.9 m/s | 2.1 |
| 1995 | 9.3°C | 4.6°C | -0.2°C | 20.9°C | -8.9°C | 124 mm | 82% | 1.8 m/s | 2 |
| 1994 | 12.1°C | 7.1°C | 2.2°C | 19.7°C | -4.8°C | 121 mm | 87% | 1.4 m/s | 1.8 |
| 1993 | 9.9°C | 5.2°C | 0.5°C | 17.0°C | -8.0°C | 157 mm | 85% | 1.7 m/s | 2.1 |
| 1992 | 10.2°C | 5.2°C | 0.2°C | 19.5°C | -6.4°C | 98 mm | 87% | 1.6 m/s | 1.6 |
| 1991 | 11.1°C | 6.4°C | 1.6°C | 19.2°C | -5.0°C | 205 mm | 88% | 1.6 m/s | 2 |
| 1990 | 12.4°C | 6.5°C | 0.5°C | 20.8°C | -10.2°C | 298 mm | 85% | 1.8 m/s | 2 |
| 1989 | 4.3°C | -0.8°C | -5.8°C | 18.4°C | -19.9°C | 74 mm | 79% | 2 m/s | 2.4 |
| 1988 | 10.4°C | 4.8°C | -0.7°C | 18.7°C | -8.5°C | 158 mm | 83% | 1.9 m/s | 2.4 |
| 1987 | 11.6°C | 6.5°C | 1.3°C | 18.3°C | -5.4°C | 237 mm | 85% | 1.9 m/s | 1.8 |
| 1986 | 8.4°C | 4.0°C | -0.4°C | 17.3°C | -4.5°C | 131 mm | 88% | 1.4 m/s | 1.9 |
| 1985 | 6.8°C | 1.4°C | -3.9°C | 19.3°C | -11.0°C | 55 mm | 80% | 1.8 m/s | 2.5 |
| 1984 | 14.3°C | 9.7°C | 5.2°C | 21.7°C | -7.9°C | 83 mm | 90% | 1.9 m/s | 1.8 |
| 1983 ❄️ | 3.3°C | -1.3°C | -6.0°C | 19.1°C | -23.8°C | 233 mm | 89% | 1.9 m/s | — |
| 1982 🌧️ | 11.8°C | 7.6°C | 3.4°C | 22.5°C | -7.8°C | 366 mm | 90% | 2.1 m/s | — |
| 1981 | 8.6°C | 3.2°C | -2.2°C | 19.1°C | -12.7°C | 47 mm | 77% | 1.9 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 10.6°C with lows near 0.5°C (mean 5.6°C), based on 45 years of NASA POWER data.
December averages 142 mm of rainfall in Collierville, a relatively wet time of year. The wettest on record was 366 mm in 1982.
The hottest December reached 25.1°C in 1998. The coldest dipped to -23.8°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3.9°C. Daytime highs moved from 9°C to 13.4°C and overnight lows from -0.7°C to 2.5°C over the same span.
December is one of the cooler months of the year in Collierville and a relatively wet time of year, so plan for around 10.6°C daytime highs and 0.5°C at night.
Not quite — December is the 2nd coolest month in Collierville, averaging 5.6°C.
For December in Collierville, pack warm layers and a jacket for chilly mornings, with typical highs of 10.6°C and lows of 0.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 84% — quite humid.
Average wind speed in December is 1.8 m/s. The windiest December on record averaged 2.3 m/s (2008).
The wettest December on record was 1982 with 366 mm. On average, December sees 142 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 Collierville 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.
