Grimsby is a city of approximately 27,300 people in Ontario, Canada. Located in the Eastern Time Zone at 43.2°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, Grimsby recorded a mean annual temperature of 49°F, ranging from 1°F lows in January to 94°F highs in June, with about 30 inches of precipitation across the year.
View historical weather for Grimsby · More cities in Ontario