Lancaster Weather in December
Average highs run from 60°F on December 1 to 57°F on December 31, and lows from 31°F to 30°F. Normal precipitation for the month is 1.11 in over about 4 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
- 1.11 in
- Record high
- 79°FDec 6, 1977
- Record low
- 2°FDec 24, 1984
- Chance of a freeze
- 100%
- Daylight
- 10 h 00 min to 9 h 52 min
- Cloud cover
- 43%
- Humidity
- 56%
- Dew point
- 28°F
- Wind
- 8.7 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 | 60°F | 31°F | 76°F 2021 | 15°F 2004 | 11% |
| Dec 2 | 60°F | 30°F | 75°F 2017 | 17°F 2004 | 11% |
| Dec 3 | 60°F | 30°F | 78°F 1977 | 17°F 1989 | 12% |
| Dec 4 | 59°F | 30°F | 76°F 1977 | 12°F 2006 | 12% |
| Dec 5 | 59°F | 30°F | 76°F 2007 | 13°F 2006 | 12% |
| Dec 6 | 59°F | 30°F | 79°F 1977 | 16°F 2011 | 12% |
| Dec 7 | 59°F | 30°F | 71°F 1979 | 13°F 2011 | 12% |
| Dec 8 | 58°F | 30°F | 72°F 1983 | 11°F 1978 | 13% |
| Dec 9 | 58°F | 30°F | 79°F 2015 | 12°F 1994 | 13% |
| Dec 10 | 58°F | 30°F | 74°F 1975 | 14°F 2013 | 13% |
| Dec 11 | 58°F | 29°F | 71°F 1975 | 15°F 2013 | 13% |
| Dec 12 | 58°F | 29°F | 70°F 1988 | 11°F 1989 | 13% |
| Dec 13 | 57°F | 29°F | 75°F 2019 | 18°F 1989 | 14% |
| Dec 14 | 57°F | 29°F | 77°F 1977 | 17°F 1989 | 14% |
| Dec 15 | 57°F | 29°F | 72°F 1981 | 18°F 1975 | 14% |
| Dec 16 | 57°F | 29°F | 75°F 1998 | 14°F 1975 | 14% |
| Dec 17 | 57°F | 29°F | 74°F 1980 | 17°F 1975 | 14% |
| Dec 18 | 57°F | 29°F | 75°F 2025 | 16°F 2016 | 15% |
| Dec 19 | 57°F | 29°F | 78°F 2025 | 14°F 2016 | 15% |
| Dec 20 | 57°F | 29°F | 74°F 2025 | 10°F 2016 | 15% |
| Dec 21 | 57°F | 29°F | 75°F 2025 | 10°F 2012 | 15% |
| Dec 22 | 57°F | 30°F | 76°F 2005 | 3°F 1990 | 15% |
| Dec 23 | 57°F | 30°F | 72°F 2005 | 3°F 1990 | 15% |
| Dec 24 | 57°F | 30°F | 72°F 2005 | 2°F 1984 | 16% |
| Dec 25 | 57°F | 30°F | 73°F 2005 | 5°F 1990 | 16% |
| Dec 26 | 57°F | 30°F | 72°F 1980 | 12°F 1984 | 16% |
| Dec 27 | 57°F | 30°F | 70°F 2005 | 13°F 1990 | 16% |
| Dec 28 | 57°F | 30°F | 74°F 2013 | 13°F 1990 | 16% |
| Dec 29 | 57°F | 30°F | 75°F 2024 | 18°F 1988 | 16% |
| Dec 30 | 57°F | 30°F | 76°F 2011 | 14°F 2015 | 16% |
| Dec 31 | 57°F | 30°F | 72°F 2017 | 11°F 1990 | 16% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:42 AM, sunset 4:42 PM
- December 31
- sunrise 7:00 AM, sunset 4:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00003159 (Lancaster Wm J Fox Fld), public domain. Records: NOAA GHCN-Daily, station USW00003159, 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.