December is one of the cooler months of the year in Van Nuys, with average highs near 18°C and lows around 10.2°C (mean 14.1°C). It is a relatively wet time of year, averaging 77 mm of rainfall and 63% relative humidity across the period.
December is one of the cooler months of the year in Van Nuys. Across 45 years of records, the warmest December in Van Nuys was 2017 — when the month averaged 17.3°C — while the coldest was 1987 at 11.7°C. Typical December days reach 18°C with nights near 10.2°C. The long-term trend is warming, about 0.4°C per decade.
December is a relatively wet time of year in Van Nuys, averaging 77 mm of rainfall. The wettest December on record was 2021 with 343 mm, while the driest was 2017 at 0 mm.
Relative humidity in Van Nuys during December averages 63%. The most humid December was 2019 at 74%, and the least humid was 2017 at 43%.
December receives about 2.8 kWh/m²/day of solar energy in Van Nuys. The sunniest December was 2017 at 3.3 kWh/m²/day, and the cloudiest was 1987 at 2.4.
Average wind speed in Van Nuys during December is 3.1 m/s. The windiest December was 1997 at 4.2 m/s, while the calmest was 2024 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.6°C | 13.6°C | 13.8°C | 14.5°C | 15.4°C | +1.8°C |
| Avg High | 17.6°C | 17.6°C | 17.7°C | 18.3°C | 19.1°C | +1.5°C |
| Avg Low | 9.6°C | 9.6°C | 10.1°C | 10.7°C | 11.6°C | +2°C |
| Avg Rain | 56 mm | 64 mm | 56 mm | 90 mm | 145 mm | +89 mm |
December temperatures in Van Nuys have risen by about 1.8°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 1.3°C (1990) to a record high of 26.9°C (2015).
Rainfall in December is a relatively wet time of year, averaging 77 mm, with a wettest year of 343 mm.
A quieter season to visit Van Nuys
If your dates are flexible, the more temperate months of August and September tend to be the most comfortable for visiting Van Nuys. That said, December — with days averaging 18°C and nights around 10.2°C (mean 14.1°C) and moderate rainfall (77 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 | 20.6°C | 16.9°C | 13.2°C | 26.4°C | 9.9°C | 252 mm | 71% | 2.7 m/s | — |
| 2024 | 20.5°C | 16.1°C | 11.7°C | 25.5°C | 8.3°C | 1 mm | 61% | 2.2 m/s | 2.9 |
| 2023 | 19.9°C | 16.3°C | 12.6°C | 25.6°C | 9.8°C | 106 mm | 67% | 2.4 m/s | 2.7 |
| 2022 | 17.1°C | 14.0°C | 10.8°C | 24.5°C | 6.4°C | 124 mm | 72% | 2.5 m/s | 2.5 |
| 2021 🌧️ | 16.2°C | 13.1°C | 10.0°C | 26.2°C | 6.7°C | 343 mm | 73% | 2.8 m/s | 2.6 |
| 2020 | 20.0°C | 15.7°C | 11.4°C | 25.2°C | 7.7°C | 45 mm | 53% | 3.1 m/s | 3 |
| 2019 | 16.9°C | 13.8°C | 10.7°C | 22.3°C | 7.1°C | 205 mm | 74% | 2.8 m/s | 2.5 |
| 2018 | 18.5°C | 14.6°C | 10.8°C | 22.6°C | 6.7°C | 75 mm | 68% | 3 m/s | 2.9 |
| 2017 🔥 | 21.9°C | 17.3°C | 12.8°C | 26.3°C | 7.1°C | 0 mm | 43% | 2.6 m/s | 3.3 |
| 2016 | 17.7°C | 14.0°C | 10.2°C | 22.5°C | 5.7°C | 162 mm | 67% | 3.1 m/s | 2.8 |
| 2015 | 18.2°C | 14.2°C | 10.2°C | 26.9°C | 6.0°C | 30 mm | 58% | 3.4 m/s | 3 |
| 2014 | 18.4°C | 15.3°C | 12.2°C | 24.8°C | 5.6°C | 109 mm | 69% | 2.7 m/s | 2.6 |
| 2013 | 19.5°C | 15.0°C | 10.6°C | 25.2°C | 4.9°C | 6 mm | 51% | 2.8 m/s | 3.2 |
| 2012 | 16.5°C | 13.2°C | 10.0°C | 22.3°C | 5.5°C | 59 mm | 71% | 2.7 m/s | 2.7 |
| 2011 | 17.9°C | 13.6°C | 9.3°C | 23.3°C | 6.7°C | 16 mm | 55% | 2.7 m/s | 3.2 |
| 2010 | 17.1°C | 13.9°C | 10.6°C | 25.6°C | 4.7°C | 239 mm | 72% | 2.9 m/s | 2.5 |
| 2009 | 16.6°C | 13.0°C | 9.5°C | 22.8°C | 4.2°C | 78 mm | 64% | 2.9 m/s | 2.8 |
| 2008 | 16.8°C | 13.0°C | 9.3°C | 25.4°C | 4.7°C | 68 mm | 66% | 3 m/s | 2.8 |
| 2007 | 16.6°C | 12.7°C | 8.9°C | 24.7°C | 4.0°C | 48 mm | 63% | 3.4 m/s | 3 |
| 2006 | 18.9°C | 14.6°C | 10.2°C | 24.8°C | 6.4°C | 25 mm | 56% | 3.4 m/s | 3.1 |
| 2005 | 18.8°C | 14.9°C | 11.1°C | 24.9°C | 7.4°C | 27 mm | 62% | 2.7 m/s | 2.7 |
| 2004 | 18.0°C | 14.4°C | 10.7°C | 25.6°C | 6.5°C | 169 mm | 65% | 3.4 m/s | 2.9 |
| 2003 | 17.3°C | 13.6°C | 9.9°C | 22.3°C | 5.2°C | 41 mm | 66% | 2.9 m/s | 2.7 |
| 2002 | 16.9°C | 13.5°C | 10.1°C | 20.6°C | 6.0°C | 70 mm | 70% | 2.7 m/s | 2.8 |
| 2001 | 16.6°C | 12.9°C | 9.1°C | 23.3°C | 6.1°C | 33 mm | 67% | 3 m/s | 2.7 |
| 2000 | 20.0°C | 15.8°C | 11.7°C | 24.3°C | 7.4°C | 1 mm | 53% | 2.7 m/s | 2.9 |
| 1999 | 19.7°C | 15.1°C | 10.6°C | 24.2°C | 7.4°C | 5 mm | 49% | 3.4 m/s | 3.1 |
| 1998 | 17.6°C | 13.2°C | 8.9°C | 23.7°C | 3.8°C | 17 mm | 56% | 3.6 m/s | 3 |
| 1997 | 17.4°C | 13.6°C | 9.8°C | 23.1°C | 5.9°C | 128 mm | 63% | 4.2 m/s | 2.9 |
| 1996 | 17.0°C | 13.7°C | 10.4°C | 20.0°C | 7.0°C | 139 mm | 72% | 3.6 m/s | 2.6 |
| 1995 | 18.9°C | 14.8°C | 10.8°C | 24.8°C | 7.1°C | 53 mm | 67% | 3.3 m/s | 2.6 |
| 1994 | 17.1°C | 13.2°C | 9.4°C | 22.2°C | 5.5°C | 30 mm | 66% | 2.9 m/s | 2.8 |
| 1993 | 18.0°C | 13.8°C | 9.6°C | 23.1°C | 5.9°C | 33 mm | 59% | 3.4 m/s | 3 |
| 1992 | 16.0°C | 12.3°C | 8.6°C | 21.8°C | 4.6°C | 131 mm | 67% | 3.9 m/s | 2.8 |
| 1991 | 17.4°C | 13.8°C | 10.2°C | 21.2°C | 6.5°C | 102 mm | 61% | 3.2 m/s | 2.9 |
| 1990 | 17.3°C | 12.7°C | 8.1°C | 24.3°C | 1.3°C | 2 mm | 49% | 3.9 m/s | 3 |
| 1989 | 20.6°C | 15.9°C | 11.2°C | 26.1°C | 7.3°C | 0 mm | 46% | 3.3 m/s | 3 |
| 1988 | 16.6°C | 12.8°C | 9.0°C | 25.0°C | 2.9°C | 100 mm | 61% | 3.5 m/s | 2.6 |
| 1987 ❄️ | 15.3°C | 11.7°C | 8.1°C | 22.6°C | 2.7°C | 87 mm | 65% | 3.7 m/s | 2.4 |
| 1986 | 18.9°C | 14.8°C | 10.6°C | 23.6°C | 7.9°C | 12 mm | 60% | 2.8 m/s | 2.7 |
| 1985 | 18.2°C | 14.1°C | 10.1°C | 22.8°C | 4.6°C | 20 mm | 61% | 3.5 m/s | 2.9 |
| 1984 | 15.5°C | 11.9°C | 8.2°C | 19.3°C | 3.9°C | 127 mm | 71% | 3.7 m/s | 2.5 |
| 1983 | 17.0°C | 13.3°C | 9.7°C | 21.2°C | 6.1°C | 95 mm | 72% | 3.4 m/s | — |
| 1982 | 16.9°C | 13.0°C | 9.2°C | 20.9°C | 5.1°C | 47 mm | 63% | 3.9 m/s | — |
| 1981 | 19.4°C | 15.1°C | 10.7°C | 23.2°C | 7.3°C | 20 mm | 63% | 3.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 18°C with lows near 10.2°C (mean 14.1°C), based on 45 years of NASA POWER data.
December averages 77 mm of rainfall in Van Nuys, a relatively wet time of year. The wettest on record was 343 mm in 2021.
The hottest December reached 26.9°C in 2015. The coldest dipped to 1.3°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.8°C. Daytime highs moved from 17.4°C to 18.9°C and overnight lows from 9.6°C to 11.7°C over the same span.
December is one of the cooler months of the year in Van Nuys and a relatively wet time of year, so plan for around 18°C daytime highs and 10.2°C at night.
Not quite — December is the 3rd coolest month in Van Nuys, averaging 14.1°C.
For December in Van Nuys, pack light layers you can adjust through the day, with typical highs of 18°C and lows of 10.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 63% — moderately humid.
Average wind speed in December is 3.1 m/s. The windiest December on record averaged 4.2 m/s (1997).
The wettest December on record was 2021 with 343 mm. On average, December sees 77 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 Van Nuys 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.
