Updated9/17/2025 20:00:00
 
Forecast - Environment Canada

 Extended Forecast - Environment Canada
  Thu, 18 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 27°C
Fri, 19 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 22°C
Sat, 20 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 19°C
Sun, 21 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 24°C
Mon, 22 Sep
Chance of showers (30%)
Chance of showers
Max: 25°C
Tue, 23 Sep
Chance of showers (30%)
Chance of showers
Max: 24°C
Tonight
Clear
Clear
Min: 14°C
Night
Mainly cloudy
Mainly cloudy
Min: 14°C
Night
Cloudy periods
Cloudy periods
Min: 9°C
Night
Cloudy periods
Cloudy periods
Min: 10°C
Night
Chance of showers (30%)
Chance of showers
Min: 15°C
Night
Chance of showers (30%)
Chance of showers
Min: 13°C

Forecast

Toronto Island, ON (Issued: 3:30 PM EDT Wednesday 17 September 2025)

Tonight
Clear. Low 14.
Thu, 18 Sep
A mix of sun and cloud. High 27. Humidex 32. UV index 6 or high.
Night
Mainly cloudy. Low 14.
Fri, 19 Sep
A mix of sun and cloud. High 22.
Night
Cloudy periods. Low 9.
Sat, 20 Sep
A mix of sun and cloud. High 19.
Night
Cloudy periods. Low 10.
Sun, 21 Sep
A mix of sun and cloud. High 24.
Night
Cloudy with 30 percent chance of showers. Low 15.
Mon, 22 Sep
Cloudy with 30 percent chance of showers. High 25.
Night
Cloudy with 30 percent chance of showers. Low 13.
Tue, 23 Sep
Cloudy with 30 percent chance of showers. High 24.

24 Hour Forecast - Toronto Island, ON

Date/Time Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
17 September 2025
9 PM 20 Clear (0%)  Clear 0 VR 5
10 PM 20 Clear (0%)  Clear 0 VR 5
11 PM 19 Clear (0%)  Clear 0 VR 5
18 September 2025
12 AM 18 Clear (0%)  Clear 0 VR 5
1 AM 18 Clear (0%)  Clear 0 VR 5
2 AM 17 Clear (0%)  Clear 0 VR 5
3 AM 16 Clear (0%)  Clear 0 VR 5
4 AM 15 Clear (0%)  Clear 0 VR 5
5 AM 14 Clear (0%)  Clear 0 VR 5
6 AM 16 A few clouds (0%)  A few clouds 0 VR 5
7 AM 17 Mainly sunny (0%)  Mainly sunny 0 VR 5
8 AM 19 Mainly sunny (0%)  Mainly sunny 0 VR 5
9 AM 20 A mix of sun and cloud (0%)  A mix of sun and cloud 0 VR 5
10 AM 21 A mix of sun and cloud (0%)  A mix of sun and cloud 0 VR 5
11 AM 22 A mix of sun and cloud (0%)  A mix of sun and cloud 0 VR 5
12 PM 23 A mix of sun and cloud (0%)  A mix of sun and cloud 0 VR 5
1 PM 24 A mix of sun and cloud (20%)  A mix of sun and cloud 20 VR 5
2 PM 25 Mainly cloudy (20%)  Mainly cloudy 20 VR 5
3 PM 26 Mainly cloudy (20%)  Mainly cloudy 20 VR 5
4 PM 26 Mainly cloudy (20%)  Mainly cloudy 20 VR 5
5 PM 27 Cloudy (20%)  Cloudy 20 VR 5
6 PM 25 Mainly cloudy (0%)  Mainly cloudy 0 VR 5
7 PM 24 Partly cloudy (0%)  Partly cloudy 0 VR 5
8 PM 22 Partly cloudy (0%)  Partly cloudy 0 VR 5
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%

Environment Canada