Climate almanac

Brown Deer

Wisconsin, United States · 43.16°, -87.96°

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What is the climate like in Brown Deer?

The best time to visit Brown Deer is typically June – September, with trip comfort peaking in August (6.9/10). Brown Deer is warmest in July, when daily highs average 78°F (25°C), and coolest in January, when lows fall to about 20°F (-7°C). The wettest month is typically April and the driest is February; the year sees roughly 37 in (947 mm) of precipitation.

  • Best time to visitJune – September — comfort peaks in August (6.9/10)
  • Warmest monthJuly — average high 78°F (25°C)
  • Coolest monthJanuary — average low 20°F (-7°C)
  • Wettest monthApril (4.0 in (103 mm))
  • Driest monthFebruary (1.8 in (47 mm))
  • Annual precipitation37 in (947 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromGermantown Wastewater Utility, 15 km away (1944-2026)