Trenton, NJ
Climate overview — based on NOAA 1991-2020 normals from TRENTON MERCER CO AP, NJ US.
Year-round temperatures (°F)
Climate summary
Trenton has an annual average temperature of 54.1°F with about 45.6 inches of precipitation per year and 26.6 inches of snow. The warmest month is July (average high 86.0°F), and the coldest is January (average low 24.3°F). July is typically the wettest month (4.42 in) and February the driest (2.65 in). Snow typically falls from November through April.
Best time to visit Trenton
Full guide →Climate change signal
All-time records →123 of 366 (33.6%) of Trenton's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 15 | |
| 1990s | 29 | |
| 2000s | 118 | |
| 2010s | 147 | |
| 2020s | 57 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 39.7°F | 24.3°F | 32.0°F | 3.29 in | 8.2 in | 10 |
| February | 42.8°F | 25.9°F | 34.3°F | 2.65 in | 8.7 in | 10 |
| March | 50.8°F | 32.7°F | 41.7°F | 4.00 in | 4.0 in | 11 |
| April | 62.9°F | 42.1°F | 52.5°F | 3.63 in | 0.5 in | 12 |
| May | 72.4°F | 51.6°F | 62.0°F | 3.99 in | — | 12 |
| June | 81.0°F | 60.9°F | 71.0°F | 4.35 in | — | 12 |
| July | 86.0°F | 66.6°F | 76.3°F | 4.42 in | — | 11 |
| August | 84.0°F | 64.8°F | 74.4°F | 4.22 in | — | 10 |
| September | 77.1°F | 57.7°F | 67.4°F | 4.05 in | — | 9 |
| October | 65.5°F | 45.9°F | 55.7°F | 3.79 in | 0.1 in | 10 |
| November | 54.5°F | 36.3°F | 45.4°F | 3.20 in | 0.5 in | 9 |
| December | 44.4°F | 29.3°F | 36.8°F | 4.04 in | 4.6 in | 11 |
Climate twins of Trenton
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).