Climate almanac

Pontoon Beach

Illinois, US · 38.73°, -90.08°

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What is the climate like in Pontoon Beach?

The best time to visit Pontoon Beach is typically September – October, with trip comfort peaking in September (7.1/10). Pontoon Beach is warmest in July, when daily highs average 88°F (31°C), and coolest in January, when lows fall to about 26°F (-3°C). The wettest month is typically April and the driest is December; the year sees roughly 46 in of precipitation.

  • Best time to visitSeptember – October — comfort peaks in September (7.1/10)
  • Warmest monthJuly — average high 88°F (31°C)
  • Coolest monthJanuary — average low 26°F (-3°C)
  • Wettest monthApril (5.5 in)
  • Driest monthDecember (2.5 in)
  • Annual precipitation46 in