December is one of the cooler months of the year in Conway, with average highs near 10.6°C and lows around 0°C (mean 5.3°C). It is a relatively wet time of year, averaging 122 mm of rainfall and 84% relative humidity across the period.
December is one of the cooler months of the year in Conway. Across 45 years of records, the warmest December in Conway was 2021 — when the month averaged 12°C — while the coldest was 1983 at -2.1°C. Typical December days reach 10.6°C with nights near 0°C. The long-term trend is warming, about 0.7°C per decade.
December is a relatively wet time of year in Conway, averaging 122 mm of rainfall. The wettest December on record was 1982 with 306 mm, while the driest was 2005 at 12 mm.
Relative humidity in Conway during December averages 84%. The most humid December was 1984 at 92%, and the least humid was 1989 at 67%.
December receives about 2.1 kWh/m²/day of solar energy in Conway. The sunniest Decembers were 1989 and 2004 at 2.6 kWh/m²/day, and the cloudiest was 1992 at 1.5.
Average wind speed in Conway during December is 1.5 m/s. The windiest December was 2008 at 2 m/s, while the calmest were 1986 and 1994 at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.0°C | 5.4°C | 4.5°C | 6.0°C | 7.5°C | +3.5°C |
| Avg High | 9.0°C | 10.5°C | 9.9°C | 11.3°C | 13.2°C | +4.2°C |
| Avg Low | -1.1°C | 0.3°C | -1.0°C | 0.7°C | 1.9°C | +3°C |
| Avg Rain | 138 mm | 118 mm | 129 mm | 120 mm | 97 mm | -40 mm |
December temperatures in Conway have risen by about 4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -21.6°C (1983) to a record high of 25.2°C (2025).
Rainfall in December is a relatively wet time of year, averaging 122 mm, with a wettest year of 306 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.9°C per decade while lows rose 0.6°C per decade, widening the gap between day and night.
A quieter season to visit Conway
If your dates are flexible, the more temperate months of September and May tend to be the most comfortable for visiting Conway. That said, December — with days averaging 10.6°C and nights around 0°C (mean 5.3°C) and higher rainfall (122 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 | 13.0°C | 7.0°C | 1.0°C | 25.2°C | -7.0°C | 13 mm | 79% | 1.5 m/s | — |
| 2024 | 12.8°C | 7.6°C | 2.4°C | 20.6°C | -5.5°C | 163 mm | 83% | 1.5 m/s | 2 |
| 2023 | 13.2°C | 7.3°C | 1.4°C | 19.6°C | -4.2°C | 39 mm | 81% | 1.4 m/s | 2.3 |
| 2022 | 10.8°C | 5.9°C | 0.9°C | 22.2°C | -15.3°C | 114 mm | 83% | 1.6 m/s | 1.9 |
| 2021 🔥 | 18.3°C | 12.0°C | 5.8°C | 24.3°C | -2.5°C | 106 mm | 82% | 1.6 m/s | 2.1 |
| 2020 | 11.1°C | 5.4°C | -0.3°C | 20.3°C | -6.2°C | 148 mm | 86% | 1.5 m/s | 2.3 |
| 2019 | 12.6°C | 7.3°C | 2.0°C | 19.6°C | -4.1°C | 35 mm | 83% | 1.4 m/s | 2.3 |
| 2018 | 10.0°C | 5.7°C | 1.3°C | 19.1°C | -5.6°C | 164 mm | 87% | 1.5 m/s | 2.1 |
| 2017 | 11.5°C | 5.8°C | 0.1°C | 23.3°C | -7.9°C | 137 mm | 71% | 1.4 m/s | 2.2 |
| 2016 | 10.8°C | 5.3°C | -0.2°C | 24.0°C | -7.5°C | 56 mm | 76% | 1.5 m/s | 2.1 |
| 2015 | 14.8°C | 9.1°C | 3.4°C | 22.9°C | -2.9°C | 220 mm | 88% | 1.6 m/s | 2.4 |
| 2014 | 10.9°C | 6.0°C | 1.2°C | 20.7°C | -3.5°C | 66 mm | 85% | 1.3 m/s | 1.6 |
| 2013 | 9.0°C | 3.7°C | -1.6°C | 19.3°C | -13.3°C | 158 mm | 88% | 1.4 m/s | 2.1 |
| 2012 | 13.1°C | 7.5°C | 2.0°C | 23.8°C | -7.3°C | 109 mm | 81% | 1.6 m/s | 2.1 |
| 2011 | 10.6°C | 5.6°C | 0.6°C | 17.3°C | -5.6°C | 198 mm | 88% | 1.3 m/s | 2.2 |
| 2010 | 9.5°C | 3.8°C | -1.9°C | 19.7°C | -6.9°C | 61 mm | 76% | 1.5 m/s | 2.2 |
| 2009 | 7.0°C | 2.7°C | -1.6°C | 16.3°C | -5.8°C | 258 mm | 87% | 1.5 m/s | 2.2 |
| 2008 | 10.6°C | 4.6°C | -1.4°C | 21.5°C | -9.1°C | 106 mm | 80% | 2 m/s | 2 |
| 2007 | 12.7°C | 6.9°C | 1.0°C | 22.6°C | -5.4°C | 153 mm | 85% | 1.5 m/s | 2 |
| 2006 | 11.5°C | 6.4°C | 1.2°C | 21.1°C | -7.3°C | 136 mm | 85% | 1.5 m/s | 2.4 |
| 2005 | 10.8°C | 4.6°C | -1.6°C | 21.5°C | -7.4°C | 12 mm | 75% | 1.5 m/s | 2.5 |
| 2004 | 10.2°C | 4.6°C | -1.1°C | 19.7°C | -14.5°C | 74 mm | 87% | 1.5 m/s | 2.6 |
| 2003 | 11.1°C | 5.1°C | -0.9°C | 18.0°C | -5.0°C | 90 mm | 82% | 1.7 m/s | 2.2 |
| 2002 | 8.9°C | 4.1°C | -0.8°C | 20.1°C | -13.4°C | 196 mm | 90% | 1.7 m/s | 2 |
| 2001 | 12.0°C | 6.8°C | 1.6°C | 21.7°C | -5.0°C | 198 mm | 85% | 1.4 m/s | 2.3 |
| 2000 | 3.7°C | -1.2°C | -6.2°C | 14.7°C | -13.3°C | 67 mm | 83% | 1.7 m/s | 2.2 |
| 1999 | 12.0°C | 6.1°C | 0.1°C | 23.1°C | -5.0°C | 128 mm | 81% | 1.6 m/s | 2.4 |
| 1998 | 11.0°C | 6.1°C | 1.2°C | 25.0°C | -6.9°C | 95 mm | 82% | 1.5 m/s | 2.2 |
| 1997 | 8.7°C | 3.9°C | -0.9°C | 17.4°C | -5.3°C | 94 mm | 86% | 1.5 m/s | 2.1 |
| 1996 | 10.8°C | 5.6°C | 0.4°C | 21.9°C | -10.4°C | 85 mm | 89% | 1.6 m/s | 2.3 |
| 1995 | 9.7°C | 4.6°C | -0.5°C | 23.1°C | -11.6°C | 108 mm | 80% | 1.5 m/s | 1.9 |
| 1994 | 11.6°C | 6.7°C | 1.8°C | 20.1°C | -6.4°C | 112 mm | 86% | 1.2 m/s | 1.9 |
| 1993 | 10.4°C | 5.1°C | -0.2°C | 17.8°C | -6.1°C | 110 mm | 87% | 1.4 m/s | 2.2 |
| 1992 | 9.9°C | 4.9°C | 0.0°C | 21.8°C | -5.6°C | 108 mm | 86% | 1.4 m/s | 1.5 |
| 1991 | 11.0°C | 6.4°C | 1.9°C | 19.6°C | -4.3°C | 135 mm | 88% | 1.4 m/s | 1.9 |
| 1990 | 9.6°C | 4.3°C | -1.0°C | 19.6°C | -12.7°C | 204 mm | 86% | 1.5 m/s | 2 |
| 1989 | 7.0°C | 0.9°C | -5.2°C | 20.0°C | -18.3°C | 43 mm | 67% | 1.7 m/s | 2.6 |
| 1988 | 10.3°C | 4.8°C | -0.8°C | 20.3°C | -8.2°C | 79 mm | 85% | 1.5 m/s | 2.3 |
| 1987 | 10.4°C | 5.6°C | 0.7°C | 19.9°C | -5.5°C | 299 mm | 87% | 1.6 m/s | 1.9 |
| 1986 | 9.0°C | 4.4°C | -0.2°C | 15.2°C | -4.3°C | 91 mm | 84% | 1.2 m/s | 2.1 |
| 1985 | 7.3°C | 2.0°C | -3.3°C | 18.3°C | -9.6°C | 79 mm | 81% | 1.6 m/s | 2.5 |
| 1984 | 13.7°C | 9.2°C | 4.7°C | 22.0°C | -9.5°C | 136 mm | 92% | 1.6 m/s | 1.8 |
| 1983 ❄️ | 2.5°C | -2.1°C | -6.7°C | 15.5°C | -21.6°C | 183 mm | 88% | 1.6 m/s | — |
| 1982 🌧️ | 11.2°C | 6.9°C | 2.6°C | 23.3°C | -6.4°C | 306 mm | 89% | 1.7 m/s | — |
| 1981 | 9.5°C | 3.9°C | -1.7°C | 20.9°C | -8.9°C | 21 mm | 77% | 1.6 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°C (mean 5.3°C), based on 45 years of NASA POWER data.
December averages 122 mm of rainfall in Conway, a relatively wet time of year. The wettest on record was 306 mm in 1982.
The hottest December reached 25.2°C in 2025. The coldest dipped to -21.6°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 4°C. Daytime highs moved from 8.8°C to 13.6°C and overnight lows from -0.9°C to 2.3°C over the same span.
December is one of the cooler months of the year in Conway and a relatively wet time of year, so plan for around 10.6°C daytime highs and 0°C at night.
Not quite — December is the 2nd coolest month in Conway, averaging 5.3°C.
For December in Conway, pack warm layers and a jacket for chilly mornings, with typical highs of 10.6°C and lows of 0°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 84% — quite humid.
Average wind speed in December is 1.5 m/s. The windiest December on record averaged 2 m/s (2008).
The wettest December on record was 1982 with 306 mm. On average, December sees 122 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 Conway 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.
