Climate almanac

Hamilton

Ontario, CA · 43.25°, -79.85°

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What is the climate like in Hamilton?

Hamilton is warmest in July, when daily highs average 80°F (26°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically April and the driest is September; the year sees roughly 38 in of precipitation.

  • Warmest monthJuly — average high 80°F (26°C)
  • Coolest monthJanuary — average low 23°F (-5°C)
  • Wettest monthApril (4.0 in)
  • Driest monthSeptember (2.3 in)
  • Annual precipitation38 in