FPCN11 CWTO 181915
ISSUED BY EC at 3:30 P.M. EDT MONDAY 18 AUG 2025.

Vaughan - Richmond Hill - Markham

Tonight..clear. Becoming partly cloudy near midnight. Wind east 20 km/h becoming light near midnight. Low 14.

Tuesday..a mix of sun and cloud. 30 percent chance of showers late in the afternoon with risk of a thunderstorm. Wind becoming southeast 20 km/h in the morning. High 23.

Tuesday night..cloudy with 70 percent chance of showers and risk of a thunderstorm. Wind east 20 km/h. Low 17.

Newmarket - Georgina - Northern York Region

Tonight..clear. Low 12.

Tuesday..mainly cloudy. 70 percent chance of showers late in the morning and in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming east 20 km/h in the morning. High 24.

Tuesday night..cloudy with 70 percent chance of showers or drizzle. Risk of a thunderstorm in the evening. Wind northeast 20 km/h becoming light in the evening. Low 16.

Pickering - Oshawa - Southern Durham Region

Tonight..a few clouds. Wind east 20 km/h becoming light near midnight. Low 14.

Tuesday..a mix of sun and cloud. 30 percent chance of showers late in the afternoon with risk of a thunderstorm. Wind becoming southeast 20 km/h in the morning. High 24.

Tuesday night..cloudy with 70 percent chance of showers and risk of a thunderstorm. Wind east 20 km/h. Low 17.

Uxbridge - Beaverton - Northern Durham Region

Tonight..a few clouds. Low 12.

Tuesday..a mix of sun and cloud. 30 percent chance of showers in the afternoon then 70 percent chance of showers late in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming east 20 km/h in the morning. High 24.

Tuesday night..cloudy with 70 percent chance of showers and risk of a thunderstorm. Wind east 20 km/h becoming light in the evening. Low 16.

Extended 3-7 day forecast.

Past 0-2 day forecasts
Sat Aug 16 19:17 UTC
Sun Aug 17 06:28 UTC
Sun Aug 17 08:46 UTC
Sun Aug 17 08:56 UTC
Sun Aug 17 14:48 UTC
Sun Aug 17 19:15 UTC
Mon Aug 18 08:46 UTC
Mon Aug 18 14:45 UTC
Mon Aug 18 19:15 UTC (current forecast)

Past 3-7 day forecasts
Sat Aug 16 19:24 UTC
Sun Aug 17 08:54 UTC
Sun Aug 17 14:20 UTC
Sun Aug 17 18:50 UTC
Mon Aug 18 08:54 UTC
Mon Aug 18 14:20 UTC
Mon Aug 18 19:24 UTC (current forecast)