Climate almanac

Ontario

Oregon, US · 44.03°, -116.96°

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What is the climate like in Ontario?

The best time to visit Ontario is typically April – October, with trip comfort peaking in June (8.7/10). Ontario is warmest in July, when daily highs average 99°F (37°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically December and the driest is July; the year sees roughly 11 in of precipitation.

  • Best time to visitApril – October — comfort peaks in June (8.7/10)
  • Warmest monthJuly — average high 99°F (37°C)
  • Coolest monthJanuary — average low 27°F (-3°C)
  • Wettest monthDecember (1.8 in)
  • Driest monthJuly (0.1 in)
  • Annual precipitation11 in