of in 2021. Notable people Climate Grimsby's climate varies throughout the year; 12 °C – 15 °C in the spring, 21 °C – 33 °C in the summer, and 10 °C – 17 °C in the fall. Temperatures in the winter months are around 4 °C to −16 °C, with about 190 cm of snow per year. See also List of townships in Ontario References External links Lower-tier municipalities in Ontario Populated places established in 1790 Towns in Ontario 1790 establishments in the British Empire