The Canadian Open in Oakville lost much of its first day with Thursday morning's rains. But play resumed in the afternoon for its 100th edition.

The delay order was issued at 8:36 a.m. after play started at 7 a.m., but CTV Toronto's John Musselman reported from Glenn Abbey golf course that as of noon, the rain appeared to be letting up. Play is began again at 4:08 p.m., said the tournament's website.

Fifty-two players did make it out onto the course. There are 156 in the tournament.

A low-pressure system moved in from the U.S. Midwest overnight.

While Environment Canada issued a special weather statement on Wednesday, but by 12:08 p.m. on Thursday, it had rescinded the warning.

It is still predicting the system will bring in 15 to 30 millimetres of rain, but had originally feared some local rainfall totals would reach 30 to 50 mm, something that prompted the Toronto and Region Conservation Authority to issue a high water safety bulletin Wednesday night.

By 11 a.m., the highest amounts had fallen in the Niagara peninsula.

Pearson International Airport recorded 19 mm. Another 14 mm fell downtown, while 22 mm fell at Buttonville Airport in Markham.

To this point, however, rainfall in Toronto has been well off the normal pace. Until Thursday's showers, Toronto had only gotten 14.4 millimetres of rain all month. A typical July will see 74.4 millimetres of rain.

As for the weekend, there should be some rain on Saturday afternoon and a 30 per cent chance of showers on Sunday.

Temperatures should be in the mid-20s, which is below the seasonal average.

A normal high would be 27 degrees Celsius. Toronto has averaged about 24 C this month.

If that's not bad enough, the city has gotten 13 hours less sunshine so far than a typical July would see -- 200 hours vs. 213 hours.

With reports from CTV Toronto's Michelle Dube, John Musselman and Claude Feig