Frederick County Weather in December
Average highs run from 49°F on December 1 to 42°F on December 31, and lows from 31°F to 25°F. Normal precipitation for the month is 3.10 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
- 45°F
- Average low
- 28°F
- Precipitation
- 3.10 in
- Snowfall
- 3.8 in
- Record high
- 78°FDec 6, 2001
- Record low
- -3°FDec 25, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 37 min to 9 h 28 min
- Cloud cover
- 70%
- Humidity
- 84%
- Dew point
- 28°F
- Wind
- 5.1 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 | 49°F | 31°F | 73°F 1998 | 19°F 2013 | 33% | 4% |
| Dec 2 | 49°F | 31°F | 75°F 2006 | 20°F 2013 | 33% | 4% |
| Dec 3 | 48°F | 31°F | 67°F 1998 | 19°F 2000 | 33% | 4% |
| Dec 4 | 48°F | 31°F | 74°F 1998 | 13°F 2002 | 33% | 4% |
| Dec 5 | 48°F | 30°F | 73°F 2012 | 15°F 2000 | 33% | 5% |
| Dec 6 | 47°F | 30°F | 78°F 2001 | 16°F 2007 | 33% | 5% |
| Dec 7 | 47°F | 30°F | 77°F 1998 | 12°F 2002 | 33% | 5% |
| Dec 8 | 47°F | 30°F | 73°F 1998 | 15°F 2010 | 33% | 5% |
| Dec 9 | 47°F | 30°F | 62°F 1991 | 11°F 1989 | 32% | 5% |
| Dec 10 | 46°F | 29°F | 66°F 1987 | 7°F 1989 | 32% | 5% |
| Dec 11 | 46°F | 29°F | 63°F 2015 | 13°F 1995 | 32% | 5% |
| Dec 12 | 46°F | 29°F | 65°F 2006 | 8°F 1988 | 32% | 5% |
| Dec 13 | 46°F | 29°F | 71°F 2015 | 6°F 1988 | 32% | 5% |
| Dec 14 | 45°F | 28°F | 71°F 2015 | 11°F 2005 | 32% | 6% |
| Dec 15 | 45°F | 28°F | 65°F 2006 | 9°F 2010 | 32% | 6% |
| Dec 16 | 45°F | 28°F | 67°F 2008 | 2°F 2010 | 32% | 6% |
| Dec 17 | 45°F | 28°F | 59°F 1997 | 5°F 1989 | 31% | 6% |
| Dec 18 | 44°F | 28°F | 70°F 1984 | 19°F 1988 | 31% | 6% |
| Dec 19 | 44°F | 27°F | 70°F 2006 | 8°F 1985 | 31% | 6% |
| Dec 20 | 44°F | 27°F | 61°F 2017 | 8°F 2004 | 31% | 6% |
| Dec 21 | 44°F | 27°F | 66°F 2013 | 7°F 1996 | 31% | 6% |
| Dec 22 | 43°F | 27°F | 70°F 2013 | 0°F 1989 | 31% | 7% |
| Dec 23 | 43°F | 27°F | 67°F 1990 | 0°F 1989 | 31% | 7% |
| Dec 24 | 43°F | 26°F | 64°F 1990 | 0°F 1989 | 31% | 7% |
| Dec 25 | 43°F | 26°F | 71°F 2015 | -3°F 1983 | 31% | 7% |
| Dec 26 | 43°F | 26°F | 68°F 2015 | -3°F 1983 | 30% | 7% |
| Dec 27 | 43°F | 26°F | 60°F 2019 | 5°F 1985 | 30% | 7% |
| Dec 28 | 42°F | 26°F | 72°F 2015 | 9°F 1989 | 30% | 7% |
| Dec 29 | 42°F | 26°F | 67°F 1988 | 9°F 2017 | 30% | 7% |
| Dec 30 | 42°F | 25°F | 75°F 1984 | 9°F 2017 | 31% | 8% |
| Dec 31 | 42°F | 25°F | 65°F 1990 | 7°F 1983 | 31% | 8% |
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 4:51 PM
- December 31
- sunrise 7:32 AM, sunset 5:00 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00449181 (Winchester), public domain. Records: NOAA GHCN-Daily, station USC00449181, 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.