Guelph Weather

This region of Ontario has cold winters and warm, humid summers, falling into the Köppen climate classification Dfb zone (humid continental), with moderately high rainfall and snowfall. It is generally a couple of degrees cooler than lower elevation regions on the Great Lakes shorelines, especially so in winter, the exception being on some spring afternoons when the lack of an onshore breeze boosts temperatures well above those found lakeside.

The highest temperature ever recorded in Guelph was 38.3 °C (100.9 °F) on 6 August 1918 and 13 July 1936. The coldest temperature ever recorded was −37.2 °C (−35.0 °F) on 25 January 1884.