January weather in Trenton, NJ
The average temperature in Trenton in January is 32.0°F (24.3°F–39.7°F). Average precipitation: 3.29 inches. Average snowfall is 8.2 inches.
January is a winter month in Trenton, and is cooler than the annual average of 54.1°F. Daily temperatures swing about 15.4°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 26m. For travel, January is cold.
Avg High
39.7°F
Avg Low
24.3°F
Precipitation
3.29 in
Snow
8.2 in
January records in Trenton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 64.0°F (2005) | 3.2°F (2018) | 1.36 in (2007) |
| January 2 | 63.0°F (2000) | 7.0°F (1999) | 0.89 in (2006) |
| January 3 | 63.0°F (2000) | 1.2°F (2014) | 1.95 in (1999) |
| January 4 | 68.0°F (2000) | -0.8°F (2014) | 0.86 in (2000) |
| January 5 | 63.0°F (2007) | 9.1°F (2016) | 0.46 in (2004) |
| January 6 | 72.0°F (2007) | 7.2°F (2018) | 0.89 in (2002) |
| January 7 | 66.0°F (2012) | -1.8°F (2018) | 1.46 in (2009) |
| January 8 | 64.0°F (2008) | 7.2°F (2015) | 0.87 in (2007) |
| January 9 | 64.9°F (2008) | 6.1°F (2004) | 2.16 in (2024) |
| January 10 | 64.9°F (2016) | 1.0°F (2004) | 1.56 in (2016) |
| January 11 | 66.9°F (2020) | 5.0°F (2004) | 0.61 in (2013) |
| January 12 | 66.0°F (2020) | 14.2°F (2022) | 1.36 in (2012) |
| January 13 | 64.9°F (2005) | 15.1°F (2011) | 0.59 in (2024) |
| January 14 | 66.9°F (2005) | 10.0°F (2004) | 1.31 in (2005) |
| January 15 | 63.0°F (2007) | 1.9°F (2004) | 1.12 in (1999) |
| January 16 | 63.0°F (2007) | 1.9°F (2004) | 0.73 in (2013) |
| January 17 | 55.9°F (2012) | 3.9°F (2009) | 0.64 in (2022) |
| January 18 | 64.0°F (2006) | 5.0°F (2003) | 1.97 in (2015) |
| January 19 | 50.0°F (2010) | 7.0°F (2003) | 1.00 in (2001) |
| January 20 | 59.0°F (2006) | 8.1°F (2026) | 0.90 in (2019) |
| January 21 | 64.0°F (2006) | -0.9°F (2026) | 0.48 in (2014) |
| January 22 | 55.0°F (2018) | 2.1°F (2025) | 0.66 in (2005) |
| January 23 | 62.1°F (1999) | 4.1°F (2025) | 1.45 in (2016) |
| January 24 | 64.0°F (1999) | 3.0°F (2005) | 0.95 in (1999) |
| January 25 | 62.1°F (2010) | 6.1°F (2004) | 1.62 in (2010) |
| January 26 | 57.9°F (2023) | 9.0°F (2007) | 1.62 in (2011) |
| January 27 | 63.0°F (2012) | 7.0°F (2003) | 0.67 in (2012) |
| January 28 | 62.1°F (2002) | 1.9°F (2005) | 0.82 in (2024) |
| January 29 | 70.0°F (2002) | 3.9°F (2005) | 0.53 in (2022) |
| January 30 | 66.9°F (2013) | 4.1°F (2014) | 0.75 in (2001) |
| January 31 | 62.1°F (2012) | 2.1°F (2019) | 0.85 in (2013) |