December weather in Arlington, TX
The average temperature in Arlington in December is 48.8°F (38.6°F–59.1°F). Average precipitation: 2.81 inches.
December is a winter month in Arlington, and is cooler than the annual average of 66.8°F. Daily temperatures swing about 20.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 51m. For travel, December is a comfortable month to visit.
Avg High
59.1°F
Avg Low
38.6°F
Precipitation
2.81 in
Daylight
9h 51m
December records in Arlington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 82.0°F (2012) | 23.2°F (2006) | 0.56 in (2009) |
| December 2 | 82.9°F (2021) | 28.0°F (2005) | 0.17 in (2009) |
| December 3 | 91.0°F (2005) | 28.9°F (2004) | 1.46 in (1998) |
| December 4 | 81.0°F (2017) | 21.2°F (2006) | 1.68 in (2011) |
| December 5 | 81.0°F (2021) | 22.1°F (2009) | 0.76 in (2011) |
| December 6 | 75.9°F (2022) | 24.1°F (1999) | 0.86 in (2013) |
| December 7 | 82.0°F (2007) | 19.9°F (2005) | 0.71 in (2018) |
| December 8 | 80.1°F (2023) | 16.0°F (2005) | 0.62 in (2002) |
| December 9 | 82.9°F (2020) | 12.0°F (2005) | 1.11 in (2002) |
| December 10 | 84.9°F (2021) | 19.2°F (2013) | 1.62 in (1998) |
| December 11 | 78.1°F (2015) | 20.1°F (2012) | 0.90 in (1999) |
| December 12 | 78.1°F (2015) | 19.9°F (2000) | 1.01 in (2003) |
| December 13 | 75.9°F (2015) | 21.9°F (1997) | 0.89 in (2020) |
| December 14 | 77.0°F (2008) | 23.0°F (2000) | 0.56 in (2007) |
| December 15 | 81.0°F (2021) | 23.0°F (2004) | 0.73 in (2023) |
| December 16 | 79.0°F (2021) | 24.1°F (1999) | 1.87 in (2001) |
| December 17 | 80.1°F (2006) | 21.0°F (2000) | 0.33 in (2014) |
| December 18 | 80.1°F (2012) | 16.2°F (2016) | 0.74 in (1998) |
| December 19 | 78.1°F (2012) | 15.3°F (2016) | 2.63 in (2017) |
| December 20 | 82.9°F (2025) | 23.2°F (2016) | 0.52 in (2006) |
| December 21 | 84.9°F (2010) | 23.2°F (2008) | 1.39 in (2013) |
| December 22 | 75.9°F (2003) | 11.1°F (2022) | 0.36 in (2004) |
| December 23 | 82.0°F (2025) | 11.1°F (2022) | 0.88 in (2002) |
| December 24 | 82.9°F (2021) | 19.9°F (2004) | 2.01 in (2023) |
| December 25 | 82.9°F (2021) | 17.2°F (2022) | 1.68 in (2000) |
| December 26 | 88.0°F (2025) | 21.0°F (1998) | 2.22 in (2018) |
| December 27 | 82.0°F (2005) | 19.2°F (2022) | 2.06 in (2015) |
| December 28 | 84.0°F (2025) | 26.2°F (2009) | 0.81 in (2024) |
| December 29 | 75.9°F (2021) | 23.2°F (2012) | 1.23 in (2006) |
| December 30 | 82.9°F (2024) | 24.3°F (2012) | 0.66 in (2002) |
| December 31 | 75.0°F (2022) | 22.1°F (2013) | 1.33 in (2020) |