December is one of the cooler months of the year in Crossville, with average highs near 8.3°C and lows around -1.4°C (mean 3.5°C). It is a relatively wet time of year, averaging 132 mm of rainfall and 84% relative humidity across the period.
December is one of the cooler months of the year in Crossville. Across 45 years of records, the warmest December in Crossville was 2015 — when the month averaged 9.6°C — while the coldest was 1989 at -3°C. Typical December days reach 8.3°C with nights near -1.4°C. The long-term trend is warming, about 0.7°C per decade.
December is a relatively wet time of year in Crossville, averaging 132 mm of rainfall. The wettest December on record was 1990 with 350 mm, while the driest was 1985 at 46 mm.
Relative humidity in Crossville during December averages 84%. The most humid December was 2018 at 90%, and the least humid was 1999 at 76%.
December receives about 2.1 kWh/m²/day of solar energy in Crossville. The sunniest Decembers were 1985, 2001 and 2006 at 2.4 kWh/m²/day, and the cloudiest was 1992 at 1.5.
Average wind speed in Crossville during December is 0.1 m/s. The windiest Decembers were 2020, 2021 and 2023, among others at 0.2 m/s, while the calmest were 2022, 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 | 2.1°C | 3.6°C | 2.8°C | 4.4°C | 5.1°C | +3°C |
| Avg High | 6.8°C | 8.4°C | 7.8°C | 9.1°C | 10.3°C | +3.5°C |
| Avg Low | -2.6°C | -1.3°C | -2.2°C | -0.3°C | -0.2°C | +2.4°C |
| Avg Rain | 112 mm | 153 mm | 120 mm | 152 mm | 116 mm | +3 mm |
December temperatures in Crossville have risen by about 3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -21.1°C (1989) to a record high of 21.9°C (1998).
Rainfall in December is a relatively wet time of year, averaging 132 mm, with a wettest year of 350 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.6°C per decade, widening the gap between day and night.
A quieter season to visit Crossville
If your dates are flexible, the more temperate months of June and September tend to be the most comfortable for visiting Crossville. That said, December — with days averaging 8.3°C and nights around -1.4°C (mean 3.5°C) and higher rainfall (132 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 | 9.7°C | 4.4°C | -0.9°C | 21.0°C | -11.5°C | 54 mm | 80% | 0.1 m/s | — |
| 2024 | 10.2°C | 4.9°C | -0.3°C | 19.2°C | -7.6°C | 120 mm | 77% | 0.1 m/s | 2.1 |
| 2023 | 11.4°C | 5.9°C | 0.4°C | 18.0°C | -6.7°C | 125 mm | 77% | 0.2 m/s | 2.3 |
| 2022 | 8.5°C | 3.4°C | -1.6°C | 19.8°C | -17.3°C | 170 mm | 85% | 0.1 m/s | 2 |
| 2021 | 14.4°C | 9.0°C | 3.6°C | 20.0°C | -5.4°C | 121 mm | 85% | 0.2 m/s | 2 |
| 2020 | 7.8°C | 2.7°C | -2.3°C | 15.7°C | -11.0°C | 103 mm | 86% | 0.2 m/s | 2.2 |
| 2019 | 11.4°C | 6.5°C | 1.5°C | 18.8°C | -7.4°C | 152 mm | 86% | 0.1 m/s | 2.3 |
| 2018 | 8.1°C | 4.1°C | 0.1°C | 17.5°C | -8.1°C | 192 mm | 90% | 0.1 m/s | 1.7 |
| 2017 | 8.0°C | 2.9°C | -2.1°C | 16.8°C | -11.6°C | 95 mm | 79% | 0.1 m/s | 2.1 |
| 2016 | 8.4°C | 3.4°C | -1.6°C | 20.0°C | -9.9°C | 188 mm | 83% | 0.1 m/s | 2.1 |
| 2015 🔥 | 14.0°C | 9.6°C | 5.1°C | 21.5°C | -5.7°C | 218 mm | 89% | 0.1 m/s | 1.9 |
| 2014 | 9.1°C | 4.6°C | 0.2°C | 16.3°C | -5.1°C | 140 mm | 88% | 0.1 m/s | 1.7 |
| 2013 | 8.2°C | 3.4°C | -1.3°C | 20.4°C | -7.4°C | 181 mm | 86% | 0.1 m/s | 1.9 |
| 2012 | 11.0°C | 6.1°C | 1.1°C | 19.9°C | -6.2°C | 142 mm | 84% | 0.1 m/s | 1.9 |
| 2011 | 10.0°C | 5.0°C | 0.0°C | 16.9°C | -5.9°C | 143 mm | 86% | 0.2 m/s | 2.1 |
| 2010 | 2.3°C | -1.9°C | -6.0°C | 10.3°C | -13.0°C | 67 mm | 84% | 0.1 m/s | 2.1 |
| 2009 | 6.1°C | 1.7°C | -2.6°C | 14.4°C | -7.4°C | 165 mm | 87% | 0.1 m/s | 1.9 |
| 2008 | 8.0°C | 2.9°C | -2.1°C | 17.8°C | -12.0°C | 200 mm | 83% | 0.1 m/s | 1.9 |
| 2007 | 11.1°C | 6.2°C | 1.3°C | 21.5°C | -5.4°C | 79 mm | 84% | 0.1 m/s | 2 |
| 2006 | 11.5°C | 5.5°C | -0.6°C | 18.9°C | -8.3°C | 72 mm | 83% | 0.2 m/s | 2.4 |
| 2005 | 5.7°C | 0.9°C | -4.0°C | 13.7°C | -7.8°C | 77 mm | 84% | 0.1 m/s | 2.1 |
| 2004 | 8.0°C | 2.7°C | -2.6°C | 19.4°C | -12.5°C | 149 mm | 84% | 0.2 m/s | 2.3 |
| 2003 | 6.8°C | 1.8°C | -3.1°C | 12.1°C | -7.0°C | 93 mm | 84% | 0.1 m/s | 2.2 |
| 2002 | 6.1°C | 2.1°C | -2.0°C | 12.8°C | -10.9°C | 163 mm | 89% | 0.2 m/s | 2.1 |
| 2001 | 10.6°C | 5.5°C | 0.4°C | 19.7°C | -10.7°C | 110 mm | 81% | 0.1 m/s | 2.4 |
| 2000 | 3.7°C | -1.4°C | -6.5°C | 14.9°C | -12.6°C | 97 mm | 81% | 0.1 m/s | 2.1 |
| 1999 | 10.0°C | 4.2°C | -1.6°C | 17.8°C | -7.3°C | 54 mm | 76% | 0.1 m/s | 2.3 |
| 1998 | 10.1°C | 5.0°C | -0.1°C | 21.9°C | -13.7°C | 180 mm | 85% | 0.1 m/s | 1.9 |
| 1997 | 6.8°C | 2.3°C | -2.2°C | 14.3°C | -11.8°C | 84 mm | 87% | 0.2 m/s | 1.9 |
| 1996 | 9.0°C | 4.0°C | -1.0°C | 19.0°C | -11.2°C | 124 mm | 86% | 0.1 m/s | 2.1 |
| 1995 | 5.7°C | 1.0°C | -3.7°C | 17.6°C | -15.4°C | 78 mm | 84% | 0.1 m/s | 2.1 |
| 1994 | 10.1°C | 5.2°C | 0.3°C | 17.9°C | -5.3°C | 69 mm | 86% | 0.2 m/s | 2 |
| 1993 | 6.3°C | 2.0°C | -2.4°C | 13.9°C | -10.9°C | 188 mm | 87% | 0.1 m/s | 2 |
| 1992 | 6.5°C | 2.5°C | -1.5°C | 16.4°C | -7.3°C | 139 mm | 88% | 0.1 m/s | 1.5 |
| 1991 | 9.4°C | 4.4°C | -0.5°C | 20.0°C | -7.4°C | 260 mm | 86% | 0.1 m/s | 2.1 |
| 1990 🌧️ | 10.2°C | 4.9°C | -0.4°C | 19.5°C | -9.9°C | 350 mm | 86% | 0.1 m/s | 1.7 |
| 1989 ❄️ | 1.6°C | -3.0°C | -7.7°C | 13.4°C | -21.1°C | 77 mm | 85% | 0.2 m/s | 2.2 |
| 1988 | 7.8°C | 2.6°C | -2.5°C | 16.1°C | -9.4°C | 122 mm | 82% | 0.1 m/s | 2.3 |
| 1987 | 9.8°C | 4.4°C | -0.9°C | 18.4°C | -6.4°C | 127 mm | 80% | 0.1 m/s | 1.9 |
| 1986 | 7.0°C | 2.4°C | -2.2°C | 15.2°C | -7.2°C | 124 mm | 87% | 0.1 m/s | 1.8 |
| 1985 | 4.4°C | -0.6°C | -5.6°C | 16.1°C | -14.6°C | 46 mm | 80% | 0.1 m/s | 2.4 |
| 1984 | 12.1°C | 7.5°C | 2.8°C | 19.8°C | -11.6°C | 82 mm | 89% | 0.1 m/s | 2.1 |
| 1983 | 4.4°C | -0.3°C | -5.0°C | 17.6°C | -20.3°C | 173 mm | 85% | 0.1 m/s | — |
| 1982 | 9.9°C | 5.8°C | 1.8°C | 20.5°C | -8.2°C | 168 mm | 88% | 0.1 m/s | — |
| 1981 | 4.4°C | 0.0°C | -4.4°C | 13.7°C | -14.0°C | 94 mm | 84% | 0.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 8.3°C with lows near -1.4°C (mean 3.5°C), based on 45 years of NASA POWER data.
December averages 132 mm of rainfall in Crossville, a relatively wet time of year. The wettest on record was 350 mm in 1990.
The hottest December reached 21.9°C in 1998. The coldest dipped to -21.1°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3°C. Daytime highs moved from 7°C to 10.8°C and overnight lows from -2.1°C to 0.2°C over the same span.
December is one of the cooler months of the year in Crossville and a relatively wet time of year, so plan for around 8.3°C daytime highs and -1.4°C at night.
Not quite — December is the 2nd coolest month in Crossville, averaging 3.5°C.
For December in Crossville, pack warm layers and a jacket for chilly mornings, with typical highs of 8.3°C and lows of -1.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 84% — quite humid.
Average wind speed in December is 0.1 m/s. The windiest December on record averaged 0.2 m/s (1989).
The wettest December on record was 1990 with 350 mm. On average, December sees 132 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 Crossville 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.
