Toronto rainfall warning: Heavy rainfall could flood streets today, here’s when it ends

A rainfall warning is in effect for Toronto on May 23 as heavy rain moves into the region today. Environment Canada has warned that 40 to 60 millimetres of rain could fall through Thursday, May 23.

The rain began early Thursday morning and is expected to continue throughout the day and evening. Officials warn that local flooding is possible in low-lying areas, especially where drainage is poor.

Commuters are advised to expect delays due to water pooling on roads. Public transit may also be affected.

Environment Canada urges residents to stay alert and avoid driving through flooded streets. People living near rivers or streams should monitor conditions closely.

The weather system is moving in from the U.S. Midwest and could impact other parts of southern Ontario, including Peel, York, and Durham.

However, this rainfall is not linked to thunderstorms but is steady and widespread. The storm is expected to taper off by early Friday morning.

City crews are on standby to respond to flooding or drainage issues.

FAQs

What is the coldest month in Toronto?

January is typically the coldest month in Toronto, with average temperatures around -5.4°C and lows often dropping below -9°C. Occasionally, temperatures can plunge much lower during cold snaps.

Is there snowfall in Toronto?

Yes, Toronto receives regular snowfall from mid-November to March, averaging about 100–122 cm (39–48 inches) annually. Snow can occasionally fall as early as October or as late as early May.

Is Toronto hot or cold?

Toronto experiences both extremes: hot, humid summers with temperatures reaching 25–30°C, and cold winters averaging -5°C, sometimes much lower. Winters require heavy clothing, while summers can be pretty warm.

Does it rain a lot in Toronto?

Toronto receives about 860 mm of precipitation annually, distributed throughout the year. Rain is common in all seasons, with occasional heavy downpours and thunderstorms, especially in spring and summer.