Climate almanac

Sunbury

Pennsylvania, United States · 40.86°, -76.79°

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What is the climate like in Sunbury?

The best time to visit Sunbury is typically August – September, with trip comfort peaking in June (6.7/10). Sunbury is warmest in July, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 26°F (-4°C). The wettest month is typically August and the driest is November; the year sees roughly 45 in (1137 mm) of precipitation.

  • Best time to visitAugust – September — comfort peaks in June (6.7/10)
  • Warmest monthJuly — average high 86°F (30°C)
  • Coolest monthJanuary — average low 26°F (-4°C)
  • Wettest monthAugust (4.3 in (109 mm))
  • Driest monthNovember (3.0 in (76 mm))
  • Annual precipitation45 in (1137 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromSelinsgrove 2 S, 10 km away (1894-2026)