December is one of the cooler months of the year in Covington, with average highs near 13.1°C and lows around 2°C (mean 7.6°C). It is about average for rainfall, averaging 109 mm of rainfall and 82% relative humidity across the period.
December is one of the cooler months of the year in Covington. Across 45 years of records, the warmest December in Covington was 2015 — when the month averaged 13.3°C — while the coldest was 1989 at 2.2°C. Typical December days reach 13.1°C with nights near 2°C. The long-term trend is warming, about 0.7°C per decade.
December is about average for rainfall in Covington, averaging 109 mm of rainfall. The wettest December on record was 2015 with 316 mm, while the driest was 2010 at 36 mm.
Relative humidity in Covington during December averages 82%. The most humid December was 2015 at 90%, and the least humid was 2001 at 72%.
December receives about 2.4 kWh/m²/day of solar energy in Covington. The sunniest Decembers were 2003 and 2004 at 2.8 kWh/m²/day, and the cloudiest was 1992 at 2.
Average wind speed in Covington during December is 0.6 m/s. The windiest December was 1983 at 0.7 m/s, while the calmest were 2018, 2021 and 2022, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.3°C | 7.4°C | 7.1°C | 8.7°C | 8.6°C | +2.3°C |
| Avg High | 11.7°C | 12.8°C | 12.9°C | 14.1°C | 14.5°C | +2.8°C |
| Avg Low | 0.8°C | 2.0°C | 1.2°C | 3.3°C | 2.8°C | +2°C |
| Avg Rain | 110 mm | 89 mm | 103 mm | 149 mm | 85 mm | -25 mm |
December temperatures in Covington have risen by about 2.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -15.4°C (1983) to a record high of 26°C (1991).
Rainfall in December is about average for rainfall, averaging 109 mm, with a wettest year of 316 mm.
A quieter season to visit Covington
If your dates are flexible, the more temperate months of May and September tend to be the most comfortable for visiting Covington. That said, December — with days averaging 13.1°C and nights around 2°C (mean 7.6°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 | 14.6°C | 8.3°C | 2.0°C | 24.9°C | -7.2°C | 49 mm | 75% | 0.6 m/s | — |
| 2024 | 13.9°C | 7.9°C | 1.9°C | 22.7°C | -5.5°C | 105 mm | 78% | 0.6 m/s | 2.6 |
| 2023 | 14.8°C | 8.8°C | 2.8°C | 20.9°C | -4.1°C | 76 mm | 76% | 0.6 m/s | 2.6 |
| 2022 | 12.7°C | 7.6°C | 2.6°C | 24.2°C | -11.5°C | 92 mm | 84% | 0.5 m/s | 2.2 |
| 2021 | 17.9°C | 12.2°C | 6.6°C | 24.3°C | -2.2°C | 114 mm | 85% | 0.5 m/s | 2.2 |
| 2020 | 13.0°C | 6.9°C | 0.7°C | 20.3°C | -5.8°C | 72 mm | 82% | 0.6 m/s | 2.7 |
| 2019 | 14.4°C | 9.1°C | 3.9°C | 20.7°C | -3.9°C | 168 mm | 82% | 0.6 m/s | 2.4 |
| 2018 | 12.4°C | 8.0°C | 3.6°C | 22.3°C | -4.7°C | 223 mm | 89% | 0.5 m/s | 2.1 |
| 2017 | 12.9°C | 7.5°C | 2.1°C | 23.1°C | -5.6°C | 77 mm | 80% | 0.5 m/s | 2.1 |
| 2016 | 14.4°C | 8.8°C | 3.1°C | 23.0°C | -5.1°C | 95 mm | 79% | 0.5 m/s | 2.3 |
| 2015 🔥 🌧️ | 18.3°C | 13.3°C | 8.4°C | 24.5°C | -3.6°C | 316 mm | 90% | 0.5 m/s | 2.2 |
| 2014 | 14.9°C | 9.4°C | 3.9°C | 21.9°C | -3.5°C | 118 mm | 84% | 0.5 m/s | 2.4 |
| 2013 | 13.8°C | 8.6°C | 3.4°C | 24.8°C | -4.7°C | 216 mm | 84% | 0.5 m/s | 2.2 |
| 2012 | 15.6°C | 9.9°C | 4.2°C | 23.1°C | -3.2°C | 144 mm | 80% | 0.6 m/s | 2.2 |
| 2011 | 15.5°C | 9.6°C | 3.7°C | 22.6°C | -2.7°C | 98 mm | 82% | 0.5 m/s | 2.6 |
| 2010 | 8.3°C | 2.6°C | -3.0°C | 16.9°C | -7.5°C | 36 mm | 75% | 0.6 m/s | 2.7 |
| 2009 | 10.5°C | 5.6°C | 0.7°C | 20.9°C | -3.8°C | 233 mm | 88% | 0.6 m/s | 2.1 |
| 2008 | 14.5°C | 8.9°C | 3.4°C | 22.3°C | -7.3°C | 108 mm | 84% | 0.6 m/s | 2.2 |
| 2007 | 16.3°C | 10.3°C | 4.2°C | 25.9°C | -5.0°C | 129 mm | 77% | 0.5 m/s | 2.4 |
| 2006 | 16.1°C | 9.7°C | 3.4°C | 22.6°C | -7.2°C | 89 mm | 79% | 0.6 m/s | 2.7 |
| 2005 | 11.7°C | 5.7°C | -0.4°C | 22.1°C | -5.3°C | 87 mm | 81% | 0.6 m/s | 2.7 |
| 2004 | 12.2°C | 6.2°C | 0.3°C | 21.8°C | -7.0°C | 61 mm | 81% | 0.6 m/s | 2.8 |
| 2003 | 11.8°C | 5.3°C | -1.2°C | 17.5°C | -5.3°C | 61 mm | 78% | 0.6 m/s | 2.8 |
| 2002 | 11.3°C | 6.0°C | 0.6°C | 17.1°C | -4.3°C | 142 mm | 86% | 0.6 m/s | 2.4 |
| 2001 | 17.2°C | 10.5°C | 3.9°C | 25.2°C | -5.8°C | 49 mm | 72% | 0.5 m/s | 2.7 |
| 2000 | 7.5°C | 2.5°C | -2.5°C | 17.9°C | -7.6°C | 75 mm | 80% | 0.6 m/s | 2.2 |
| 1999 | 14.0°C | 7.5°C | 0.9°C | 22.0°C | -5.7°C | 60 mm | 77% | 0.6 m/s | 2.7 |
| 1998 | 15.9°C | 10.4°C | 4.8°C | 25.8°C | -3.7°C | 56 mm | 78% | 0.6 m/s | 2.2 |
| 1997 | 11.2°C | 6.3°C | 1.3°C | 17.9°C | -5.3°C | 154 mm | 87% | 0.5 m/s | 2.5 |
| 1996 | 12.8°C | 7.3°C | 1.8°C | 22.7°C | -8.1°C | 81 mm | 85% | 0.5 m/s | 2.4 |
| 1995 | 10.9°C | 5.6°C | 0.2°C | 20.0°C | -7.9°C | 92 mm | 83% | 0.5 m/s | 2.6 |
| 1994 | 12.9°C | 8.0°C | 3.1°C | 20.5°C | -4.2°C | 62 mm | 87% | 0.5 m/s | 2.2 |
| 1993 | 10.7°C | 5.6°C | 0.6°C | 19.7°C | -5.6°C | 80 mm | 84% | 0.6 m/s | 2.5 |
| 1992 | 10.4°C | 5.9°C | 1.5°C | 20.9°C | -3.8°C | 121 mm | 89% | 0.5 m/s | 2 |
| 1991 | 14.6°C | 8.6°C | 2.5°C | 26.0°C | -5.4°C | 98 mm | 76% | 0.6 m/s | 2.5 |
| 1990 | 14.6°C | 9.1°C | 3.6°C | 22.2°C | -6.1°C | 87 mm | 84% | 0.6 m/s | 2.1 |
| 1989 ❄️ | 7.1°C | 2.2°C | -2.7°C | 17.5°C | -14.4°C | 154 mm | 83% | 0.6 m/s | 2.6 |
| 1988 | 12.6°C | 6.3°C | 0.0°C | 20.9°C | -5.9°C | 37 mm | 80% | 0.5 m/s | 2.6 |
| 1987 | 14.4°C | 8.6°C | 2.8°C | 23.6°C | -4.8°C | 76 mm | 77% | 0.6 m/s | 2.2 |
| 1986 | 10.9°C | 6.2°C | 1.5°C | 19.2°C | -5.1°C | 83 mm | 87% | 0.5 m/s | 2.1 |
| 1985 | 10.3°C | 4.4°C | -1.5°C | 20.5°C | -8.7°C | 52 mm | 79% | 0.5 m/s | 2.7 |
| 1984 | 16.8°C | 10.9°C | 5.0°C | 23.4°C | -7.0°C | 66 mm | 84% | 0.5 m/s | 2.6 |
| 1983 | 9.7°C | 4.3°C | -1.1°C | 20.7°C | -15.4°C | 188 mm | 82% | 0.7 m/s | — |
| 1982 | 14.5°C | 9.5°C | 4.6°C | 23.4°C | -5.9°C | 133 mm | 88% | 0.5 m/s | — |
| 1981 | 9.1°C | 4.0°C | -1.0°C | 20.0°C | -7.6°C | 201 mm | 79% | 0.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 13.1°C with lows near 2°C (mean 7.6°C), based on 45 years of NASA POWER data.
December averages 109 mm of rainfall in Covington, about average for rainfall. The wettest on record was 316 mm in 2015.
The hottest December reached 26°C in 1991. The coldest dipped to -15.4°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 12.1°C to 14.8°C and overnight lows from 1.2°C to 3.2°C over the same span.
December is one of the cooler months of the year in Covington and about average for rainfall, so plan for around 13.1°C daytime highs and 2°C at night.
Not quite — December is the 2nd coolest month in Covington, averaging 7.6°C.
For December in Covington, pack warm layers and a jacket for chilly mornings, with typical highs of 13.1°C and lows of 2°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 82% — quite humid.
Average wind speed in December is 0.6 m/s. The windiest December on record averaged 0.7 m/s (1983).
The wettest December on record was 2015 with 316 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 Covington 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.
