Bethesda Weather in December
Average highs run from 45°F on December 1 to 37°F on December 31, and lows from 29°F to 23°F.
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
- 41°F
- Average low
- 26°F
- Snowfall
- 5.2 in
- Record high
- 71°FDec 5, 2001
- Record low
- -7°FDec 16, 1951
- Chance of a freeze
- 100%
- Daylight
- 9 h 33 min to 9 h 23 min
- Cloud cover
- 76%
- Humidity
- 86%
- 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 | 45°F | 29°F | 70°F 2006 | 13°F 1952 | 10% | |
| Dec 2 | 45°F | 29°F | 65°F 2018 | 19°F 2000 | 11% | |
| Dec 3 | 44°F | 29°F | 63°F 1951 | 14°F 2000 | 11% | |
| Dec 4 | 44°F | 29°F | 65°F 2001 | 10°F 2002 | 11% | |
| Dec 5 | 44°F | 28°F | 71°F 2001 | 13°F 2025 | 12% | |
| Dec 6 | 44°F | 28°F | 70°F 1998 | 8°F 2007 | 12% | |
| Dec 7 | 43°F | 28°F | 68°F 1998 | 13°F 2008 | 12% | |
| Dec 8 | 43°F | 28°F | 61°F 2023 | 10°F 2005 | 13% | |
| Dec 9 | 43°F | 28°F | 68°F 1952 | 12°F 2002 | 13% | |
| Dec 10 | 42°F | 27°F | 60°F 2021 | 15°F 2009 | 13% | |
| Dec 11 | 42°F | 27°F | 64°F 2007 | 15°F 1948 | 13% | |
| Dec 12 | 42°F | 27°F | 70°F 2015 | 10°F 2013 | 14% | |
| Dec 13 | 42°F | 27°F | 66°F 2015 | 10°F 2010 | 14% | |
| Dec 14 | 41°F | 26°F | 67°F 2015 | 7°F 2025 | 14% | |
| Dec 15 | 41°F | 26°F | 61°F 2021 | 2°F 1951 | 14% | |
| Dec 16 | 41°F | 26°F | 65°F 2021 | -7°F 1951 | 15% | |
| Dec 17 | 41°F | 26°F | 60°F 2006 | -4°F 1951 | 15% | |
| Dec 18 | 40°F | 25°F | 61°F 2006 | 10°F 1950 | 15% | |
| Dec 19 | 40°F | 25°F | 59°F 2002 | 4°F 2004 | 15% | |
| Dec 20 | 40°F | 25°F | 58°F 1949 | 0°F 2004 | 16% | |
| Dec 21 | 40°F | 25°F | 64°F 1949 | 4°F 2008 | 16% | |
| Dec 22 | 39°F | 25°F | 69°F 2013 | 1°F 2008 | 16% | |
| Dec 23 | 39°F | 24°F | 67°F 2015 | -4°F 2022 | 16% | |
| Dec 24 | 39°F | 24°F | 64°F 2015 | -3°F 2022 | 17% | |
| Dec 25 | 39°F | 24°F | 63°F 2023 | 4°F 2000 | 17% | |
| Dec 26 | 38°F | 24°F | 65°F 2016 | 1°F 2000 | 17% | |
| Dec 27 | 38°F | 23°F | 69°F 2008 | -1°F 1950 | 18% | |
| Dec 28 | 38°F | 23°F | 65°F 2024 | -2°F 1950 | 18% | |
| Dec 29 | 38°F | 23°F | 65°F 2024 | 8°F 2000 | 18% | |
| Dec 30 | 38°F | 23°F | 68°F 2022 | 7°F 2017 | 18% | |
| Dec 31 | 37°F | 23°F | 66°F 1951 | 1°F 2017 | 19% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:27 AM, sunset 5:00 PM
- December 31
- sunrise 7:46 AM, sunset 5:09 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00330430 (Barnesville), public domain. Records: NOAA GHCN-Daily, station USW00014894, 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.