December weather in Pittsburgh, PA
The average temperature in Pittsburgh in December is 34.4°F (27.7°F–41.0°F). Average precipitation: 3.04 inches.
December is a winter month in Pittsburgh, and is cooler than the annual average of 52.4°F. Daily temperatures swing about 13.3°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 9h 7m. For travel, December is cold.
Avg High
41.0°F
Avg Low
27.7°F
Precipitation
3.04 in
Daylight
9h 7m
December records in Pittsburgh
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 73.0°F (2006) | 10.0°F (1936) | 0.75 in (2010) |
| December 2 | 64.0°F (2018) | 15.1°F (1946) | 0.97 in (1936) |
| December 3 | 63.0°F (1951) | 12.9°F (2002) | 0.36 in (1950) |
| December 4 | 66.9°F (2001) | 10.9°F (2002) | 0.29 in (2012) |
| December 5 | 73.0°F (2001) | 14.0°F (2025) | 1.01 in (2013) |
| December 6 | 64.0°F (1951) | 11.1°F (2007) | 0.86 in (2014) |
| December 7 | 68.0°F (1951) | 12.9°F (1937) | 1.03 in (2012) |
| December 8 | 61.0°F (2023) | 1.2°F (2017) | 0.48 in (2009) |
| December 9 | 64.0°F (1946) | 6.1°F (1937) | 1.20 in (2009) |
| December 10 | 64.0°F (1946) | 10.0°F (1937) | 0.98 in (2003) |
| December 11 | 64.0°F (2007) | 9.0°F (1937) | 0.89 in (2021) |
| December 12 | 70.0°F (2015) | 9.0°F (1937) | 0.82 in (1949) |
| December 13 | 66.0°F (2015) | 8.1°F (1937) | 0.93 in (2007) |
| December 14 | 68.0°F (2015) | 10.0°F (2025) | 1.16 in (1999) |
| December 15 | 61.0°F (2008) | 5.0°F (1951) | 1.09 in (1948) |
| December 16 | 66.0°F (2021) | -5.1°F (1951) | 0.82 in (2007) |
| December 17 | 61.0°F (2006) | 0.0°F (1951) | 1.46 in (2001) |
| December 18 | 60.1°F (2006) | 5.0°F (1945) | 1.27 in (2016) |
| December 19 | 61.0°F (2002) | 6.1°F (2004) | 1.42 in (2008) |
| December 20 | 61.0°F (1949) | 1.0°F (2004) | 1.00 in (2018) |
| December 21 | 64.9°F (1949) | 3.9°F (1935) | 0.81 in (2013) |
| December 22 | 69.1°F (2013) | 1.9°F (1935) | 0.65 in (2006) |
| December 23 | 66.0°F (2015) | -1.8°F (2022) | 0.75 in (2017) |
| December 24 | 64.9°F (2015) | -0.8°F (2022) | 1.37 in (2008) |
| December 25 | 63.0°F (2015) | -4.0°F (1935) | 0.73 in (2021) |
| December 26 | 64.9°F (2016) | -5.1°F (1935) | 0.88 in (2008) |
| December 27 | 69.1°F (2008) | 3.9°F (1950) | 0.80 in (2011) |
| December 28 | 64.9°F (2008) | 1.2°F (2017) | 0.78 in (2021) |
| December 29 | 64.9°F (2024) | 9.0°F (1935) | 0.77 in (1948) |
| December 30 | 66.9°F (2022) | 7.2°F (2017) | 0.27 in (2003) |
| December 31 | 62.1°F (1951) | 1.2°F (2017) | 0.72 in (2018) |