Here’s how much rain fell in Ontario on Sunday

The weekend deluge dumped a huge amount of rain in Ontario.

The expected rainfall prompted an advisory followed by a “significant rainfall” warning for Sunday from Environment and Climate Change Canada.

A Texas low brought widespread rainfall to southern Ontario and
portions of northeastern Ontario on Sunday.

Amounts ranging between 20 to 44 millimetres were expected in areas such as Mississauga, Brampton, Guelph, Oakville, Hamilton, Kitchener, London, Vaughan, Niagara Falls, Oshawa, Markham, Richmond Hill, and beyond.

So how much rain ended up falling?

Here is a summary of total rainfall amounts in millimetres:

• Toronto Pearson International Airport 25.1
• Burlington 36.3*
• Hamilton 32.6
• North York 28.8
• Chatham 43.9*
• Delhi 43.9
• Ridgetown 43.3
• Windsor International Airport 34.6
• Sarnia 34.3
• Owen Sound 33.8*
• Region of Waterloo International Airport 32.1
• Colborne 32.0*
• Port Stanley 32.0*
• Tobermory 31.6
• North Bay 28.6
• Peterborough 26.5
• Algonquin Park East Gate 25.3

(* indicates a volunteer report to Environment Canada)

The heavy rainfall comes after Pearson Airport already broke a record for the highest amount of precipitation in a year. The previous record in 2008 total was 1049.6 millimetres.

A Texas low brought widespread rain over southern Ontario and portions of northeastern Ontario. Strong southerly winds northeast of Lake Erie was also experienced as the low pressure system tracked across southwestern ON.
Weather Summary 👉 https://t.co/sV8QzxVlSx#onstorm #onwx pic.twitter.com/u2yqbk04MY

— ECCC Weather Ontario (@ECCCWeatherON) December 30, 2024

Lead photo: Max