Climate almanac

Grimsby

Ontario, CA · 43.20°, -79.57°

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What is the climate like in Grimsby?

Grimsby is warmest in July, when daily highs average 78°F (25°C), and coolest in January, when lows fall to about 25°F (-4°C). The wettest month is typically April and the driest is September; the year sees roughly 38 in of precipitation.

  • Warmest monthJuly — average high 78°F (25°C)
  • Coolest monthJanuary — average low 25°F (-4°C)
  • Wettest monthApril (4.1 in)
  • Driest monthSeptember (2.3 in)
  • Annual precipitation38 in