The Weather Network tracks Toronto’s 336 mm, Wiarton’s 557 mm

The weather network says Ontario has gone through an unusually wet first four months of 2026, with Toronto measuring 336 mm of precipitation and Wiarton reaching 557 mm by the end of April. For many communities, dry stretches have been short enough to count in days rather than weeks.

Toronto had dry runs of four days twice this year, from March 1 to March 4 and again from April 20 to April 24. Guelph’s longest dry streak lasted four days from March 1 to March 4, while Hamilton’s longest precipitation-free stretches were three days, from March 2 to March 4 and from April 21 to April 23.

Toronto and Wiarton totals

Toronto’s 336 mm through the first four months of 2026 ranked a few millimetres behind 2023 and placed second. Wiarton’s 557 mm from January through April broke the previous record of 517 mm set in 2013. Those figures sit within a pattern that has kept many Ontario communities from drying out since January 1.

Lake-effect snow events followed intrusions of cold air through the middle of winter, then spring brought an active storm track across the Great Lakes. Limited ridging or blocking in the atmosphere allowed systems to keep moving through the region, and the result has been a steady flow of precipitation rather than long breaks between storms.

Hamilton and Sault Ste. Marie

Hamilton’s two three-day dry spells were among the shortest in the data, and Sault Ste. Marie’s longest dry streak to this point in 2026 has also been three days. That leaves little room for communities to recover between events, especially as the wetter-than-normal pattern is set to continue throughout May.

For residents watching the totals climb, the practical takeaway is simple: the wet pattern has not eased by the end of April, and the next stretch of May is expected to stay active. The communities already near the top of the precipitation list are the ones most likely to keep seeing repeated wet days first.