December weather in Reading, PA
The average temperature in Reading in December is 35.7°F (28.0°F–43.4°F). Average precipitation: 3.51 inches.
December is a winter month in Reading, and is cooler than the annual average of 53.7°F. Daily temperatures swing about 15.4°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 8m. For travel, December is cold.
Avg High
43.4°F
Avg Low
28.0°F
Precipitation
3.51 in
Daylight
9h 8m
December records in Reading
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 72.0°F (2006) | 19.0°F (1999) | 0.82 in (2010) |
| December 2 | 59.0°F (2021) | 19.9°F (2000) | 0.65 in (2025) |
| December 3 | 64.9°F (2012) | 12.9°F (2000) | 0.89 in (2009) |
| December 4 | 68.0°F (2012) | 14.0°F (2000) | 0.49 in (2020) |
| December 5 | 72.0°F (2001) | 19.9°F (2025) | 0.80 in (2002) |
| December 6 | 69.1°F (2001) | 15.1°F (2007) | 0.93 in (2013) |
| December 7 | 61.0°F (2011) | 5.0°F (2002) | 1.49 in (2011) |
| December 8 | 57.9°F (2024) | 12.9°F (2002) | 0.58 in (2001) |
| December 9 | 55.0°F (1999) | 10.9°F (2002) | 1.35 in (2009) |
| December 10 | 60.1°F (2008) | 9.0°F (2002) | 1.75 in (2023) |
| December 11 | 66.0°F (2021) | 10.9°F (2005) | 1.87 in (2008) |
| December 12 | 62.1°F (2015) | 18.1°F (2013) | 1.00 in (2010) |
| December 13 | 68.0°F (2015) | 10.0°F (2005) | 1.04 in (2007) |
| December 14 | 66.9°F (2015) | 1.9°F (2005) | 1.13 in (2000) |
| December 15 | 62.1°F (2008) | 10.0°F (2005) | 1.18 in (2022) |
| December 16 | 62.1°F (2021) | 12.2°F (2016) | 1.22 in (2005) |
| December 17 | 62.1°F (2000) | 12.9°F (1949) | 1.40 in (2000) |
| December 18 | 64.0°F (2006) | 15.1°F (2002) | 1.88 in (2023) |
| December 19 | 61.0°F (2025) | 11.1°F (2020) | 0.98 in (2008) |
| December 20 | 60.1°F (2002) | 5.0°F (2004) | 0.55 in (2018) |
| December 21 | 64.9°F (2018) | 10.0°F (2000) | 0.86 in (2012) |
| December 22 | 68.0°F (2013) | 8.1°F (2000) | 0.82 in (2006) |
| December 23 | 66.9°F (2015) | 5.2°F (2022) | 0.87 in (2004) |
| December 24 | 71.1°F (2015) | 4.1°F (2022) | 1.32 in (2008) |
| December 25 | 64.0°F (2020) | 12.0°F (2000) | 1.40 in (2002) |
| December 26 | 59.0°F (1949) | 10.9°F (2000) | 1.09 in (1949) |
| December 27 | 60.1°F (2015) | 13.1°F (2017) | 1.53 in (2023) |
| December 28 | 66.0°F (2008) | 10.2°F (2017) | 1.15 in (2018) |
| December 29 | 64.9°F (2024) | 11.1°F (2017) | 0.76 in (2013) |
| December 30 | 61.0°F (2022) | 14.2°F (2017) | 0.59 in (2019) |
| December 31 | 55.9°F (2024) | 3.2°F (2017) | 0.89 in (2018) |