Climate almanac

Delavan

Wisconsin, United States · 42.63°, -88.64°

+ Compare

What is the climate like in Delavan?

The best time to visit Delavan is typically June – September, with trip comfort peaking in July (6.7/10). Delavan is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 17°F (-8°C). The wettest month is typically May and the driest is February; the year sees roughly 38 in (956 mm) of precipitation.

  • Best time to visitJune – September — comfort peaks in July (6.7/10)
  • Warmest monthJuly — average high 83°F (28°C)
  • Coolest monthJanuary — average low 17°F (-8°C)
  • Wettest monthMay (4.3 in (110 mm))
  • Driest monthFebruary (1.7 in (44 mm))
  • Annual precipitation38 in (956 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromDelavan Wwtp, 1 km away (2011-2026)