Climate almanac
Hackettstown
New Jersey, United States · 40.85°, -74.83°
What is the climate like in Hackettstown?
The best time to visit Hackettstown is typically June, the year's most comfortable month (6.5/10). Hackettstown is warmest in July, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically July and the driest is November; the year sees roughly 49 in (1243 mm) of precipitation.
- Best time to visitJune — the year's comfort peak (6.5/10)
- Warmest monthJuly — average high 86°F (30°C)
- Coolest monthJanuary — average low 27°F (-3°C)
- Wettest monthJuly (5.0 in (126 mm))
- Driest monthNovember (3.2 in (82 mm))
- Annual precipitation49 in (1243 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromSchooley's Mtn 1 Sw, 8 km away (1994-2026)