Climate almanac
Swanzey
New Hampshire, United States · 42.87°, -72.28°
What is the climate like in Swanzey?
The best time to visit Swanzey is typically August – September, with trip comfort peaking in June (6.9/10). Swanzey is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 20°F (-7°C). The wettest month is typically December and the driest is June; the year sees roughly 45 in (1136 mm) of precipitation.
- Best time to visitAugust – September — comfort peaks in June (6.9/10)
- Warmest monthJuly — average high 83°F (28°C)
- Coolest monthJanuary — average low 20°F (-7°C)
- Wettest monthDecember (4.7 in (119 mm))
- Driest monthJune (3.1 in (78 mm))
- Annual precipitation45 in (1136 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromKeene, 8 km away (1893-2026)