Special weather statement in effect for:

  • Niagara Falls – Welland – Southern Niagara Region
  • St. Catharines – Grimsby – Northern Niagara Region

A very un-summerlike weekend for most of Southern Ontario with cool wind-driven rain affecting many areas.

A low pressure system arriving Saturday from the American Midwest will spread rain across Southern Ontario from west to east through the day. In many areas the rain will continue through Sunday afternoon and may be heavy at times. An isolated thunderstorm may accompany the rain on Saturday over Southwestern Ontario.

Regions from Windsor to the Golden Horseshoe will likely receive copious amounts of rain totalling 30 to 60 millimetres. Rainfall warnings may be required. Lesser amounts, in the 20 to 40 millimetre range, are expected over Central and Eastern Ontario. Areas farther north, to the northeast of Georgian Bay, should receive even less with the rain arriving Saturday night.

Additionally, strong northeasterly winds are expected to develop Saturday with gusts generally in the 50 to 70 km/h range with the strongest winds along the Lower Great Lakes.

The forecast for today and the weekend ahead is as follows:


Mainly sunny. Wind becoming northeast 20 km/h gusting to 40 this morning. High 23 except 19 along the lakeshore. UV index 9 or very high.


Increasing cloudiness late this evening. Wind northeast 20 km/h gusting to 40. Low 15.


Cloudy. Rain at times heavy beginning in the morning. Amount 20 to 30 mm. Wind northeast 30 km/h increasing to 50 gusting to 70 late in the morning. High 17.


Rain. Windy. Low 13.


Periods of rain. High 19.


Cloudy with 60 percent chance of showers. Low 14.


A mix of sun and cloud. High 26.


Cloudy with 40 percent chance of showers. Low 16.


Cloudy with 40 percent chance of showers. High 24.


Cloudy periods with 30 percent chance of showers. Low 16.


A mix of sun and cloud. High 22.


Cloudy periods. Low 15.

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