San Ardo Weather in December
Average highs run from 61°F on December 1 to 58°F on December 31, and lows from 30°F to 30°F. Normal precipitation for the month is 3.45 in over about 9 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
- 58°F
- Average low
- 30°F
- Precipitation
- 3.45 in
- Record high
- 83°FDec 4, 1958
- Record low
- 8°FDec 22, 1990
- Chance of a freeze
- 100%
- Daylight
- 9 h 53 min to 9 h 46 min
- Cloud cover
- 50%
- Humidity
- 75%
- Dew point
- 40°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 61°F | 30°F | 82°F 2021 | 21°F 1991 | 24% |
| Dec 2 | 60°F | 30°F | 77°F 1959 | 22°F 1990 | 24% |
| Dec 3 | 60°F | 30°F | 81°F 1958 | 22°F 1990 | 24% |
| Dec 4 | 60°F | 30°F | 83°F 1958 | 21°F 1990 | 25% |
| Dec 5 | 59°F | 30°F | 77°F 1962 | 17°F 2013 | 25% |
| Dec 6 | 59°F | 30°F | 74°F 1962 | 16°F 2013 | 26% |
| Dec 7 | 59°F | 30°F | 76°F 1979 | 20°F 1978 | 26% |
| Dec 8 | 59°F | 30°F | 76°F 1979 | 18°F 1956 | 27% |
| Dec 9 | 59°F | 30°F | 77°F 1975 | 17°F 1956 | 27% |
| Dec 10 | 58°F | 30°F | 75°F 2017 | 19°F 1956 | 27% |
| Dec 11 | 58°F | 30°F | 79°F 2017 | 23°F 1963 | 28% |
| Dec 12 | 58°F | 30°F | 75°F 1988 | 20°F 1979 | 28% |
| Dec 13 | 58°F | 30°F | 73°F 2017 | 22°F 1967 | 28% |
| Dec 14 | 58°F | 30°F | 80°F 1958 | 17°F 1967 | 29% |
| Dec 15 | 58°F | 30°F | 74°F 2017 | 18°F 1975 | 29% |
| Dec 16 | 58°F | 30°F | 77°F 1958 | 20°F 1975 | 29% |
| Dec 17 | 58°F | 30°F | 78°F 1998 | 21°F 1975 | 29% |
| Dec 18 | 58°F | 30°F | 73°F 2000 | 22°F 1965 | 30% |
| Dec 19 | 58°F | 30°F | 73°F 2000 | 21°F 1971 | 30% |
| Dec 20 | 58°F | 30°F | 74°F 1999 | 20°F 1971 | 30% |
| Dec 21 | 58°F | 30°F | 72°F 1999 | 17°F 1998 | 30% |
| Dec 22 | 58°F | 30°F | 73°F 1999 | 8°F 1990 | 30% |
| Dec 23 | 58°F | 30°F | 73°F 2024 | 8°F 1990 | 30% |
| Dec 24 | 58°F | 30°F | 74°F 1999 | 13°F 1990 | 31% |
| Dec 25 | 58°F | 30°F | 75°F 1980 | 13°F 1990 | 31% |
| Dec 26 | 58°F | 30°F | 78°F 2013 | 17°F 1990 | 31% |
| Dec 27 | 58°F | 30°F | 75°F 1999 | 17°F 1990 | 31% |
| Dec 28 | 58°F | 30°F | 73°F 1956 | 18°F 1990 | 31% |
| Dec 29 | 58°F | 30°F | 74°F 1956 | 19°F 1969 | 31% |
| Dec 30 | 58°F | 30°F | 74°F 2013 | 17°F 1990 | 31% |
| Dec 31 | 58°F | 30°F | 74°F 1997 | 18°F 1969 | 32% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:56 AM, sunset 4:49 PM
- December 31
- sunrise 7:14 AM, sunset 5:00 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00047150 (Priest Valley), public domain. Records: NOAA GHCN-Daily, station USW00093209, 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.