January weather in Philadelphia, PA
The average temperature in Philadelphia in January is 34.7°F (27.8°F–41.6°F). Average precipitation: 3.61 inches. Average snowfall is 6.4 inches.
January is a winter month in Philadelphia, and is cooler than the annual average of 57.7°F. Daily temperatures swing about 13.8°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 27m. For travel, January is cold.
Avg High
41.6°F
Avg Low
27.8°F
Precipitation
3.61 in
Snow
6.4 in
January records in Philadelphia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 63.0°F (2005) | 8.1°F (2018) | 1.80 in (2007) |
| January 2 | 64.9°F (2000) | 8.1°F (2018) | 1.63 in (2006) |
| January 3 | 64.0°F (2000) | 12.9°F (2012) | 1.00 in (1999) |
| January 4 | 68.0°F (2000) | 10.9°F (2014) | 1.07 in (2015) |
| January 5 | 66.0°F (2023) | 10.9°F (2016) | 0.50 in (2019) |
| January 6 | 70.0°F (2007) | 7.0°F (2018) | 1.27 in (2009) |
| January 7 | 64.0°F (2008) | 3.0°F (2014) | 1.38 in (1995) |
| January 8 | 70.0°F (1998) | 3.9°F (2014) | 1.75 in (1996) |
| January 9 | 66.0°F (1998) | 10.0°F (2015) | 0.40 in (1997) |
| January 10 | 60.1°F (2024) | 8.1°F (2004) | 0.83 in (2016) |
| January 11 | 64.9°F (2016) | 12.0°F (2004) | 1.38 in (2012) |
| January 12 | 66.9°F (2020) | 14.0°F (1997) | 0.51 in (2013) |
| January 13 | 66.9°F (2020) | 14.0°F (1997) | 2.00 in (2019) |
| January 14 | 66.0°F (2005) | 12.9°F (2018) | 1.15 in (1999) |
| January 15 | 72.0°F (1995) | 5.0°F (1994) | 0.95 in (1997) |
| January 16 | 70.0°F (1995) | 3.9°F (1994) | 0.99 in (2013) |
| January 17 | 60.1°F (1995) | 6.1°F (2009) | 0.71 in (2008) |
| January 18 | 59.0°F (1999) | 1.9°F (1994) | 1.64 in (1994) |
| January 19 | 64.0°F (1996) | -5.1°F (1994) | 0.96 in (2001) |
| January 20 | 59.0°F (2006) | 1.9°F (1994) | 1.35 in (2019) |
| January 21 | 61.0°F (2006) | 5.0°F (1994) | 0.19 in (2011) |
| January 22 | 48.9°F (2006) | 3.0°F (2014) | 1.03 in (2005) |
| January 23 | 64.0°F (1999) | 3.9°F (2014) | 2.47 in (1998) |
| January 24 | 64.9°F (1999) | 9.0°F (2011) | 0.88 in (2017) |
| January 25 | 63.0°F (2018) | 9.0°F (2026) | 1.06 in (2020) |
| January 26 | 62.1°F (2010) | 9.0°F (2007) | 1.09 in (2023) |
| January 27 | 61.0°F (2002) | 8.1°F (1994) | 1.69 in (2011) |
| January 28 | 63.0°F (2002) | 7.0°F (2005) | 1.69 in (1994) |
| January 29 | 73.0°F (2002) | 10.9°F (2026) | 0.32 in (2001) |
| January 30 | 68.0°F (2006) | 10.9°F (2026) | 0.83 in (2000) |
| January 31 | 68.0°F (2013) | 5.0°F (2019) | 1.21 in (2013) |