San Bernardino de Milpillas Chico Weather in December
Average highs run from 20°C on December 1 to 18°C on December 31, and lows from 5°C to 4°C. Normal precipitation for the month is 9 mm over about 3 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- 19°C
- Average low
- 5°C
- Precipitation
- 9 mm
- Reanalysis high
- 25°CDec 5, 2017
- Reanalysis low
- -8°CDec 13, 1997
- Daylight
- 10 h 48 min to 10 h 43 min
- Cloud cover
- 40%
- Humidity
- 60%
- Dew point
- 2°C
- Wind
- 6.5 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 20°C | 5°C | 24°C 2017 | -2°C 1996 | 7% |
| Dec 2 | 20°C | 5°C | 25°C 2007 | -1°C 2009 | 6% |
| Dec 3 | 20°C | 5°C | 24°C 1995 | -1°C 1991 | 6% |
| Dec 4 | 20°C | 5°C | 25°C 1995 | -1°C 2009 | 7% |
| Dec 5 | 20°C | 5°C | 25°C 2017 | -3°C 2016 | 6% |
| Dec 6 | 20°C | 5°C | 25°C 2017 | -3°C 2020 | 6% |
| Dec 7 | 20°C | 5°C | 24°C 2019 | 0°C 2020 | 6% |
| Dec 8 | 20°C | 5°C | 24°C 2019 | -3°C 2017 | 6% |
| Dec 9 | 19°C | 5°C | 23°C 2000 | -5°C 2017 | 6% |
| Dec 10 | 19°C | 5°C | 24°C 1996 | 0°C 2017 | 6% |
| Dec 11 | 19°C | 5°C | 24°C 2005 | -1°C 1997 | 6% |
| Dec 12 | 19°C | 5°C | 25°C 2005 | -6°C 1997 | 6% |
| Dec 13 | 19°C | 5°C | 24°C 2005 | -8°C 1997 | 6% |
| Dec 14 | 19°C | 5°C | 25°C 2016 | -3°C 1997 | 6% |
| Dec 15 | 19°C | 5°C | 25°C 2016 | -2°C 1997 | 6% |
| Dec 16 | 19°C | 4°C | 25°C 2000 | -1°C 1999 | 6% |
| Dec 17 | 19°C | 4°C | 25°C 2000 | -1°C 2005 | 6% |
| Dec 18 | 19°C | 4°C | 24°C 2000 | -1°C 2019 | 7% |
| Dec 19 | 19°C | 4°C | 24°C 2007 | 0°C 1996 | 6% |
| Dec 20 | 19°C | 4°C | 24°C 2007 | -1°C 2009 | 7% |
| Dec 21 | 19°C | 4°C | 25°C 2016 | -1°C 2018 | 7% |
| Dec 22 | 18°C | 4°C | 24°C 2016 | -1°C 1995 | 7% |
| Dec 23 | 18°C | 4°C | 23°C 2012 | 0°C 2002 | 7% |
| Dec 24 | 18°C | 4°C | 24°C 2017 | -3°C 2004 | 7% |
| Dec 25 | 18°C | 4°C | 24°C 2017 | -5°C 2004 | 8% |
| Dec 26 | 18°C | 4°C | 23°C 2017 | -3°C 2001 | 9% |
| Dec 27 | 18°C | 4°C | 24°C 2020 | -2°C 1997 | 8% |
| Dec 28 | 18°C | 4°C | 24°C 2016 | -1°C 1994 | 8% |
| Dec 29 | 18°C | 4°C | 24°C 2016 | -3°C 2003 | 7% |
| Dec 30 | 18°C | 4°C | 24°C 1992 | -1°C 2020 | 7% |
| Dec 31 | 18°C | 4°C | 25°C 2007 | -5°C 2020 | 7% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:26 AM, sunset 6:14 PM
- December 31
- sunrise 7:42 AM, sunset 6:25 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.