Forecast

Toronto, ON (Issued: 3:30 PM EDT Monday 18 May 2026)

Tonight

Clear. Increasing cloudiness this evening then 40 percent chance of showers late this evening and overnight. Risk of a thunderstorm late this evening. Fog patches developing overnight. Wind southwest 30 km/h gusting to 50 becoming light overnight. Low 18.

Tue, 19 May

Mainly cloudy. 30 percent chance of showers late in the morning and in the afternoon. Risk of a thunderstorm late in the afternoon. Fog patches dissipating in the morning. Wind becoming west 30 km/h gusting to 50 in the morning. High 29. Humidex 34. UV index 9 or very high.

Night

Mainly cloudy with 60 percent chance of showers. Risk of a thunderstorm in the evening. Wind southwest 20 km/h gusting to 40 becoming light late in the evening. Wind becoming northwest 20 gusting to 40 overnight. Low 10.

Wed, 20 May

A mix of sun and cloud with 30 percent chance of showers. High 17.

Night

Clear. Low 6.

Thu, 21 May

Sunny. High 16.

Night

Cloudy. Low 9.

Fri, 22 May

Cloudy. High 15.

Night

Cloudy with 40 percent chance of showers. Low 10.

Sat, 23 May

Cloudy with 40 percent chance of showers. High 13.

Night

Cloudy with 40 percent chance of showers. Low 11.

Sun, 24 May

Cloudy with 40 percent chance of showers. High 20.