Climate almanac

Swanzey

New Hampshire, United States · 42.87°, -72.28°

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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)