August weather in Trenton, NJ
The average temperature in Trenton in August is 74.4°F (64.8°F–84.0°F). Average precipitation: 4.22 inches.
August is a summer month in Trenton, and is warmer than the annual average of 54.1°F. Daily temperatures swing about 19.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 36m. For travel, August is a comfortable month to visit.
Avg High
84.0°F
Avg Low
64.8°F
Precipitation
4.22 in
Daylight
13h 36m
August records in Trenton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (1999) | 57.9°F (1998) | 0.98 in (2003) |
| August 2 | 100.0°F (2002) | 55.0°F (1998) | 2.01 in (2009) |
| August 3 | 97.0°F (2006) | 55.9°F (1998) | 0.72 in (2011) |
| August 4 | 96.1°F (2005) | 57.0°F (2025) | 2.15 in (2020) |
| August 5 | 95.0°F (2005) | 55.0°F (2013) | 1.30 in (2022) |
| August 6 | 93.0°F (2018) | 55.9°F (2004) | 4.45 in (2024) |
| August 7 | 95.0°F (2001) | 55.9°F (2004) | 1.70 in (2019) |
| August 8 | 97.0°F (2007) | 54.0°F (2004) | 1.00 in (2005) |
| August 9 | 99.0°F (2001) | 55.9°F (2025) | 1.02 in (2012) |
| August 10 | 96.1°F (2010) | 54.0°F (1999) | 0.96 in (2023) |
| August 11 | 96.1°F (2010) | 55.9°F (2008) | 2.04 in (2001) |
| August 12 | 96.1°F (2002) | 57.9°F (2006) | 1.97 in (2000) |
| August 13 | 98.1°F (2002) | 54.0°F (2006) | 1.76 in (2005) |
| August 14 | 99.0°F (2002) | 57.0°F (2013) | 4.66 in (2011) |
| August 15 | 95.0°F (2002) | 54.0°F (2013) | 0.82 in (2011) |
| August 16 | 95.0°F (2002) | 53.1°F (2014) | 0.38 in (2004) |
| August 17 | 96.1°F (2002) | 55.0°F (2013) | 0.65 in (1998) |
| August 18 | 96.1°F (2002) | 55.9°F (1945) | 0.46 in (2023) |
| August 19 | 95.0°F (2002) | 55.0°F (2000) | 0.97 in (2021) |
| August 20 | 93.0°F (2010) | 50.0°F (1998) | 1.02 in (2015) |
| August 21 | 93.0°F (2009) | 48.9°F (2000) | 1.26 in (2014) |
| August 22 | 91.9°F (2003) | 52.0°F (2024) | 3.29 in (2009) |
| August 23 | 87.1°F (1998) | 53.1°F (2024) | 1.17 in (2021) |
| August 24 | 91.9°F (1998) | 51.1°F (2003) | 1.00 in (2002) |
| August 25 | 93.0°F (2007) | 54.0°F (1945) | 1.41 in (1945) |
| August 26 | 93.0°F (2016) | 55.0°F (2008) | 1.90 in (1999) |
| August 27 | 91.9°F (2020) | 54.0°F (2025) | 3.91 in (2011) |
| August 28 | 95.0°F (2018) | 48.9°F (2025) | 1.83 in (2011) |
| August 29 | 97.0°F (2010) | 55.9°F (2011) | 1.46 in (2002) |
| August 30 | 95.0°F (2010) | 51.1°F (2025) | 0.55 in (2003) |
| August 31 | 98.1°F (2010) | 50.0°F (2025) | 0.15 in (2004) |