December is one of the cooler months of the year in Clovis, with average highs near 12.3°C and lows around 1.8°C (mean 7.1°C). It is a relatively wet time of year, averaging 90 mm of rainfall and 60% relative humidity across the period.
December is one of the cooler months of the year in Clovis. Across 45 years of records, the warmest Decembers in Clovis were 2017 and 2025 — when the month averaged 10.8°C — while the coldest was 1987 at 4.1°C. Typical December days reach 12.3°C with nights near 1.8°C. The long-term trend is warming, about 0.3°C per decade.
December is a relatively wet time of year in Clovis, averaging 90 mm of rainfall. The wettest December on record was 2010 with 329 mm, while the driest was 2011 at 0 mm.
Relative humidity in Clovis during December averages 60%. The most humid December was 1983 at 78%, and the least humid was 1989 at 36%.
December receives about 2.2 kWh/m²/day of solar energy in Clovis. The sunniest Decembers were 2011 and 2013 at 2.9 kWh/m²/day, and the cloudiest was 2010 at 1.8.
Average wind speed in Clovis during December is 0.8 m/s. The windiest Decembers were 2013, 2021 and 2022, among others at 0.9 m/s, while the calmest was 2019 at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.8°C | 6.8°C | 6.6°C | 7.1°C | 8.4°C | +1.6°C |
| Avg High | 12.1°C | 12.3°C | 11.5°C | 12.4°C | 13.6°C | +1.5°C |
| Avg Low | 1.5°C | 1.3°C | 1.7°C | 1.9°C | 3.1°C | +1.6°C |
| Avg Rain | 68 mm | 77 mm | 102 mm | 93 mm | 119 mm | +51 mm |
December temperatures in Clovis have risen by about 1.9°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -12.1°C (1990) to a record high of 25°C (2021).
Rainfall in December is a relatively wet time of year, averaging 90 mm, with a wettest year of 329 mm.
A quieter season to visit Clovis
If your dates are flexible, the more temperate months of September and June tend to be the most comfortable for visiting Clovis. That said, December — with days averaging 12.3°C and nights around 1.8°C (mean 7.1°C) and higher rainfall (90 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 | 16.3°C | 10.8°C | 5.4°C | 23.5°C | -0.5°C | 123 mm | 60% | 0.8 m/s | — |
| 2024 | 15.9°C | 10.1°C | 4.2°C | 21.5°C | -0.1°C | 38 mm | 57% | 0.8 m/s | 2.2 |
| 2023 | 15.6°C | 10.4°C | 5.1°C | 21.6°C | 0.3°C | 36 mm | 56% | 0.8 m/s | 2.3 |
| 2022 | 9.9°C | 5.4°C | 0.9°C | 20.1°C | -8.1°C | 259 mm | 73% | 0.9 m/s | 1.9 |
| 2021 | 9.4°C | 4.9°C | 0.4°C | 25.0°C | -8.2°C | 216 mm | 70% | 0.9 m/s | 1.9 |
| 2020 | 14.7°C | 8.8°C | 2.8°C | 23.0°C | -2.2°C | 39 mm | 46% | 0.8 m/s | 2.4 |
| 2019 | 11.3°C | 6.6°C | 2.0°C | 17.0°C | -1.8°C | 95 mm | 69% | 0.7 m/s | 2.1 |
| 2018 | 12.7°C | 7.3°C | 1.8°C | 18.3°C | -3.2°C | 27 mm | 60% | 0.8 m/s | 2.1 |
| 2017 🔥 | 17.5°C | 10.8°C | 4.2°C | 22.8°C | -3.9°C | 2 mm | 37% | 0.8 m/s | 2.8 |
| 2016 | 11.4°C | 6.3°C | 1.1°C | 18.8°C | -8.7°C | 125 mm | 66% | 0.8 m/s | 2.3 |
| 2015 | 9.3°C | 4.7°C | 0.1°C | 19.1°C | -6.5°C | 104 mm | 67% | 0.8 m/s | 2.3 |
| 2014 | 12.8°C | 8.0°C | 3.2°C | 20.5°C | -5.0°C | 87 mm | 68% | 0.8 m/s | 2.1 |
| 2013 | 14.5°C | 8.1°C | 1.7°C | 22.3°C | -9.0°C | 15 mm | 43% | 0.9 m/s | 2.9 |
| 2012 | 9.6°C | 5.2°C | 0.9°C | 18.2°C | -5.9°C | 143 mm | 73% | 0.8 m/s | 2 |
| 2011 | 14.2°C | 7.9°C | 1.6°C | 18.8°C | -2.0°C | 0 mm | 39% | 0.8 m/s | 2.9 |
| 2010 🌧️ | 10.3°C | 6.2°C | 2.1°C | 20.0°C | -10.1°C | 329 mm | 74% | 0.8 m/s | 1.8 |
| 2009 | 9.9°C | 5.2°C | 0.5°C | 16.9°C | -7.9°C | 118 mm | 66% | 0.8 m/s | 2.2 |
| 2008 | 10.5°C | 5.5°C | 0.5°C | 22.1°C | -8.3°C | 81 mm | 63% | 0.9 m/s | 2.1 |
| 2007 | 10.2°C | 4.9°C | -0.4°C | 22.6°C | -5.0°C | 83 mm | 60% | 0.8 m/s | 2.3 |
| 2006 | 13.1°C | 7.5°C | 1.9°C | 22.6°C | -4.5°C | 52 mm | 51% | 0.9 m/s | 2.4 |
| 2005 | 13.0°C | 8.1°C | 3.3°C | 22.2°C | -2.7°C | 185 mm | 63% | 0.8 m/s | 1.9 |
| 2004 | 12.9°C | 7.9°C | 2.9°C | 23.8°C | -1.5°C | 133 mm | 59% | 0.9 m/s | 2 |
| 2003 | 10.5°C | 6.0°C | 1.5°C | 20.5°C | -8.1°C | 115 mm | 68% | 0.8 m/s | 2 |
| 2002 | 10.1°C | 5.7°C | 1.4°C | 17.3°C | -3.4°C | 115 mm | 73% | 0.9 m/s | 2.2 |
| 2001 | 9.4°C | 5.2°C | 0.9°C | 17.4°C | -5.5°C | 129 mm | 70% | 0.8 m/s | 2 |
| 2000 | 15.7°C | 10.0°C | 4.3°C | 20.8°C | -0.9°C | 5 mm | 45% | 0.9 m/s | 2.3 |
| 1999 | 15.4°C | 9.1°C | 2.7°C | 22.2°C | -2.2°C | 4 mm | 41% | 0.8 m/s | 2.7 |
| 1998 | 11.9°C | 6.3°C | 0.6°C | 22.4°C | -7.1°C | 26 mm | 54% | 0.8 m/s | 2.5 |
| 1997 | 11.5°C | 6.1°C | 0.7°C | 20.3°C | -4.4°C | 68 mm | 58% | 0.8 m/s | 2.1 |
| 1996 | 11.2°C | 6.8°C | 2.4°C | 17.9°C | -7.1°C | 221 mm | 74% | 0.9 m/s | 1.9 |
| 1995 | 13.4°C | 8.2°C | 3.1°C | 20.8°C | -1.8°C | 111 mm | 61% | 0.8 m/s | 2 |
| 1994 | 11.7°C | 6.4°C | 1.0°C | 19.7°C | -3.5°C | 61 mm | 64% | 0.8 m/s | 2.1 |
| 1993 | 13.3°C | 7.4°C | 1.4°C | 19.1°C | -3.5°C | 38 mm | 52% | 0.9 m/s | 2.2 |
| 1992 | 9.3°C | 4.3°C | -0.7°C | 19.3°C | -6.0°C | 155 mm | 66% | 0.9 m/s | 2.2 |
| 1991 | 13.8°C | 8.3°C | 2.8°C | 19.1°C | -1.3°C | 59 mm | 52% | 0.9 m/s | 2.3 |
| 1990 | 11.0°C | 5.2°C | -0.6°C | 20.9°C | -12.1°C | 25 mm | 47% | 0.9 m/s | 2.7 |
| 1989 | 17.4°C | 10.6°C | 3.8°C | 21.2°C | 0.5°C | 1 mm | 36% | 0.9 m/s | 2.5 |
| 1988 | 10.8°C | 5.6°C | 0.3°C | 21.9°C | -11.9°C | 85 mm | 61% | 0.8 m/s | 2.1 |
| 1987 ❄️ | 9.0°C | 4.1°C | -0.8°C | 17.8°C | -6.7°C | 68 mm | 65% | 0.8 m/s | 2.1 |
| 1986 | 14.4°C | 8.6°C | 2.8°C | 21.1°C | -0.1°C | 19 mm | 48% | 0.9 m/s | 2 |
| 1985 | 14.1°C | 8.4°C | 2.7°C | 22.3°C | -5.4°C | 52 mm | 58% | 0.8 m/s | 2 |
| 1984 | 9.5°C | 4.5°C | -0.6°C | 16.8°C | -7.7°C | 55 mm | 67% | 0.8 m/s | 2 |
| 1983 | 9.6°C | 5.3°C | 1.0°C | 16.1°C | -4.5°C | 150 mm | 78% | 0.8 m/s | — |
| 1982 | 10.5°C | 5.6°C | 0.7°C | 16.7°C | -4.3°C | 112 mm | 67% | 0.8 m/s | — |
| 1981 | 13.4°C | 8.4°C | 3.5°C | 19.0°C | -1.9°C | 65 mm | 65% | 0.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 12.3°C with lows near 1.8°C (mean 7.1°C), based on 45 years of NASA POWER data.
December averages 90 mm of rainfall in Clovis, a relatively wet time of year. The wettest on record was 329 mm in 2010.
The hottest December reached 25°C in 2021. The coldest dipped to -12.1°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.9°C. Daytime highs moved from 11.4°C to 13.4°C and overnight lows from 1.5°C to 3.2°C over the same span.
December is one of the cooler months of the year in Clovis and a relatively wet time of year, so plan for around 12.3°C daytime highs and 1.8°C at night.
Yes — December is the coldest month of the year in Clovis, averaging 7.1°C.
For December in Clovis, pack warm layers and a jacket for chilly mornings, with typical highs of 12.3°C and lows of 1.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 60% — moderately humid.
Average wind speed in December is 0.8 m/s. The windiest December on record averaged 0.9 m/s (1986).
The wettest December on record was 2010 with 329 mm. On average, December sees 90 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 Clovis 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.
