Martinez Weather in December
Average highs run from 63°F on December 1 to 58°F on December 31, and lows from 44°F to 40°F. Normal precipitation for the month is 3.82 in over about 10 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 60°F
- Average low
- 42°F
- Precipitation
- 3.82 in
- Snowfall
- 0.1 in
- Record high
- 82°FDec 18, 2016
- Record low
- 11°FDec 24, 2022
- Chance of a freeze
- 81%
- Daylight
- 10 h 06 min to 9 h 59 min
- Cloud cover
- 55%
- Humidity
- 79%
- Dew point
- 40°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 63°F | 44°F | 77°F 1998 | 28°F 1999 | 27% | 0% |
| Dec 2 | 63°F | 44°F | 76°F 1998 | 30°F 1999 | 27% | 0% |
| Dec 3 | 63°F | 44°F | 81°F 2021 | 29°F 2000 | 28% | 0% |
| Dec 4 | 63°F | 44°F | 77°F 1998 | 25°F 2000 | 28% | 0% |
| Dec 5 | 62°F | 44°F | 78°F 1998 | 30°F 2000 | 28% | 0% |
| Dec 6 | 62°F | 44°F | 80°F 1998 | 29°F 2010 | 29% | 0% |
| Dec 7 | 62°F | 43°F | 80°F 1998 | 27°F 1997 | 29% | 0% |
| Dec 8 | 62°F | 43°F | 78°F 1998 | 22°F 2010 | 29% | 0% |
| Dec 9 | 61°F | 43°F | 78°F 2007 | 24°F 2006 | 30% | 0% |
| Dec 10 | 61°F | 43°F | 81°F 2019 | 29°F 2025 | 30% | 0% |
| Dec 11 | 61°F | 43°F | 79°F 2007 | 31°F 2009 | 30% | 0% |
| Dec 12 | 61°F | 43°F | 80°F 2007 | 32°F 2003 | 30% | 0% |
| Dec 13 | 61°F | 42°F | 78°F 2007 | 24°F 2010 | 31% | 0% |
| Dec 14 | 60°F | 42°F | 75°F 2015 | 17°F 2010 | 31% | 0% |
| Dec 15 | 60°F | 42°F | 76°F 2015 | 22°F 2025 | 31% | 0% |
| Dec 16 | 60°F | 42°F | 75°F 2019 | 25°F 2004 | 31% | 0% |
| Dec 17 | 60°F | 42°F | 74°F 2001 | 28°F 2000 | 31% | 0% |
| Dec 18 | 60°F | 42°F | 82°F 2016 | 23°F 2000 | 31% | 0% |
| Dec 19 | 59°F | 42°F | 76°F 2006 | 23°F 2000 | 32% | 0% |
| Dec 20 | 59°F | 41°F | 71°F 2008 | 18°F 2000 | 32% | 0% |
| Dec 21 | 59°F | 41°F | 81°F 2013 | 22°F 1996 | 32% | 0% |
| Dec 22 | 59°F | 41°F | 78°F 2013 | 27°F 2008 | 32% | 0% |
| Dec 23 | 59°F | 41°F | 76°F 2017 | 17°F 2022 | 32% | 0% |
| Dec 24 | 59°F | 41°F | 77°F 2015 | 11°F 2022 | 32% | 0% |
| Dec 25 | 59°F | 41°F | 81°F 2015 | 21°F 2022 | 32% | 0% |
| Dec 26 | 58°F | 41°F | 80°F 2015 | 21°F 2022 | 32% | 1% |
| Dec 27 | 58°F | 41°F | 78°F 2015 | 26°F 2010 | 32% | 1% |
| Dec 28 | 58°F | 41°F | 80°F 2015 | 24°F 2010 | 32% | 1% |
| Dec 29 | 58°F | 40°F | 79°F 2021 | 26°F 2000 | 32% | 1% |
| Dec 30 | 58°F | 40°F | 75°F 2015 | 24°F 2000 | 32% | 1% |
| Dec 31 | 58°F | 40°F | 78°F 1996 | 19°F 2000 | 32% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:14 AM, sunset 5:20 PM
- December 31
- sunrise 7:32 AM, sunset 5:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013837 (Augusta Daniel Fld AP), public domain. Records: NOAA GHCN-Daily, station USW00013837, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.