Arlington Weather in December
Average highs run from 66°F on December 1 to 61°F on December 31, and lows from 41°F to 39°F. Normal precipitation for the month is 4.78 in over about 12 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
- 63°F
- Average low
- 40°F
- Precipitation
- 4.78 in
- Record high
- 84°FDec 25, 2015
- Record low
- 19°FDec 26, 2022
- Chance of a freeze
- 97%
- Daylight
- 10 h 15 min to 10 h 08 min
- Cloud cover
- 56%
- Humidity
- 80%
- Dew point
- 44°F
- Wind
- 8.3 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 | 66°F | 41°F | 82°F 2016 | 29°F 2011 | 37% |
| Dec 2 | 66°F | 41°F | 80°F 2015 | 28°F 2020 | 37% |
| Dec 3 | 65°F | 41°F | 78°F 2007 | 31°F 2010 | 37% |
| Dec 4 | 65°F | 41°F | 81°F 2012 | 26°F 2024 | 37% |
| Dec 5 | 65°F | 40°F | 81°F 2001 | 28°F 2006 | 38% |
| Dec 6 | 65°F | 40°F | 82°F 2013 | 29°F 2010 | 38% |
| Dec 7 | 64°F | 40°F | 81°F 2013 | 29°F 2010 | 38% |
| Dec 8 | 64°F | 40°F | 80°F 2004 | 25°F 2006 | 38% |
| Dec 9 | 64°F | 40°F | 82°F 2007 | 24°F 2006 | 38% |
| Dec 10 | 64°F | 40°F | 83°F 2007 | 25°F 2010 | 38% |
| Dec 11 | 64°F | 40°F | 82°F 2007 | 30°F 2010 | 38% |
| Dec 12 | 64°F | 40°F | 82°F 2007 | 30°F 2018 | 39% |
| Dec 13 | 63°F | 40°F | 82°F 2007 | 31°F 2010 | 39% |
| Dec 14 | 63°F | 40°F | 82°F 2007 | 22°F 2010 | 39% |
| Dec 15 | 63°F | 40°F | 79°F 2009 | 23°F 2010 | 39% |
| Dec 16 | 63°F | 40°F | 79°F 2008 | 26°F 2004 | 38% |
| Dec 17 | 63°F | 40°F | 82°F 2001 | 28°F 2025 | 38% |
| Dec 18 | 63°F | 40°F | 82°F 2008 | 28°F 2020 | 38% |
| Dec 19 | 62°F | 39°F | 82°F 2016 | 30°F 2007 | 38% |
| Dec 20 | 62°F | 39°F | 80°F 2008 | 26°F 2004 | 38% |
| Dec 21 | 62°F | 39°F | 80°F 2008 | 28°F 2004 | 38% |
| Dec 22 | 62°F | 39°F | 76°F 2006 | 29°F 2024 | 38% |
| Dec 23 | 62°F | 39°F | 81°F 2013 | 30°F 2012 | 37% |
| Dec 24 | 62°F | 39°F | 79°F 2017 | 20°F 2022 | 37% |
| Dec 25 | 62°F | 39°F | 84°F 2015 | 20°F 2022 | 37% |
| Dec 26 | 62°F | 39°F | 82°F 2008 | 19°F 2022 | 37% |
| Dec 27 | 61°F | 39°F | 83°F 2015 | 25°F 2022 | 37% |
| Dec 28 | 61°F | 39°F | 81°F 2015 | 20°F 2010 | 37% |
| Dec 29 | 61°F | 39°F | 80°F 2007 | 25°F 2010 | 37% |
| Dec 30 | 61°F | 39°F | 77°F 2021 | 28°F 2010 | 36% |
| Dec 31 | 61°F | 39°F | 78°F 2021 | 27°F 2001 | 36% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:20 AM, sunset 5:35 PM
- December 31
- sunrise 7:38 AM, sunset 5:46 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00063828 (Newton 8 W), public domain. Records: NOAA GHCN-Daily, station USC00092738, 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.