Lancaster Weather in December
Average highs run from 53°F on December 1 to 45°F on December 31, and lows from 33°F to 28°F. Normal precipitation for the month is 4.03 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
- 48°F
- Average low
- 30°F
- Precipitation
- 4.03 in
- Snowfall
- 1.4 in
- Record high
- 78°FDec 15, 1984
- Record low
- -18°FDec 22, 1989
- Chance of a freeze
- 100%
- Daylight
- 9 h 45 min to 9 h 37 min
- Cloud cover
- 71%
- Humidity
- 85%
- Dew point
- 32°F
- Wind
- 6.9 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 | 53°F | 33°F | 70°F 1995 | 6°F 1976 | 29% | 1% |
| Dec 2 | 52°F | 33°F | 71°F 1933 | 11°F 1964 | 29% | 1% |
| Dec 3 | 52°F | 33°F | 75°F 1982 | 9°F 1942 | 30% | 1% |
| Dec 4 | 52°F | 32°F | 75°F 1982 | 9°F 1940 | 30% | 1% |
| Dec 5 | 51°F | 32°F | 75°F 1982 | 12°F 2002 | 30% | 1% |
| Dec 6 | 51°F | 32°F | 74°F 1998 | 10°F 1937 | 30% | 1% |
| Dec 7 | 51°F | 32°F | 74°F 1951 | 0°F 1977 | 30% | 2% |
| Dec 8 | 50°F | 32°F | 69°F 1951 | 0°F 1977 | 30% | 2% |
| Dec 9 | 50°F | 31°F | 69°F 1946 | 7°F 1937 | 30% | 2% |
| Dec 10 | 50°F | 31°F | 70°F 1952 | 2°F 1995 | 30% | 2% |
| Dec 11 | 49°F | 31°F | 70°F 2007 | 5°F 1977 | 30% | 2% |
| Dec 12 | 49°F | 31°F | 67°F 1939 | -7°F 1962 | 30% | 2% |
| Dec 13 | 49°F | 31°F | 69°F 2015 | -8°F 1962 | 30% | 2% |
| Dec 14 | 49°F | 31°F | 69°F 1948 | -8°F 1962 | 30% | 2% |
| Dec 15 | 48°F | 30°F | 78°F 1984 | 3°F 2010 | 30% | 2% |
| Dec 16 | 48°F | 30°F | 73°F 1984 | -3°F 1989 | 30% | 2% |
| Dec 17 | 48°F | 30°F | 70°F 1984 | -2°F 1989 | 30% | 2% |
| Dec 18 | 47°F | 30°F | 70°F 1984 | 0°F 1953 | 30% | 2% |
| Dec 19 | 47°F | 30°F | 67°F 1967 | -5°F 1963 | 30% | 2% |
| Dec 20 | 47°F | 30°F | 64°F 1978 | -5°F 1963 | 31% | 2% |
| Dec 21 | 47°F | 30°F | 70°F 2013 | 2°F 1963 | 31% | 2% |
| Dec 22 | 47°F | 29°F | 72°F 1967 | -18°F 1989 | 31% | 3% |
| Dec 23 | 46°F | 29°F | 72°F 1941 | -18°F 1989 | 31% | 3% |
| Dec 24 | 46°F | 29°F | 68°F 1970 | -12°F 1989 | 31% | 3% |
| Dec 25 | 46°F | 29°F | 70°F 2015 | -10°F 1989 | 31% | 3% |
| Dec 26 | 46°F | 29°F | 72°F 1942 | 2°F 1935 | 31% | 3% |
| Dec 27 | 46°F | 29°F | 72°F 2016 | 2°F 1933 | 31% | 3% |
| Dec 28 | 45°F | 28°F | 73°F 2015 | 6°F 1977 | 31% | 3% |
| Dec 29 | 45°F | 28°F | 71°F 1984 | 3°F 1961 | 31% | 3% |
| Dec 30 | 45°F | 28°F | 68°F 1984 | -3°F 1983 | 31% | 3% |
| Dec 31 | 45°F | 28°F | 65°F 1965 | -3°F 1983 | 31% | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:35 AM, sunset 5:20 PM
- December 31
- sunrise 7:53 AM, sunset 5:30 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00151890 (Crab Orchard 6 N), public domain. Records: NOAA GHCN-Daily, station USC00152040, 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.