Climate almanac
Grimsby
Ontario, CA · 43.20°, -79.57°
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