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

Niagara Falls - Welland - Southern Niagara Region

Tonight..clear. Becoming partly cloudy overnight. Wind northeast 20 km/h becoming light this evening. Low 14.

Tuesday..a mix of sun and cloud. 40 percent chance of showers late in the afternoon with risk of a thunderstorm. High 27.

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

St. Catharines - Grimsby - Northern Niagara Region

Tonight..partly cloudy. Becoming clear this evening. Wind northeast 20 km/h becoming light this evening. Low 14.

Tuesday..a mix of sun and cloud. 40 percent chance of showers late in the afternoon with risk of a thunderstorm. High 26.

Tuesday night..cloudy with 70 percent chance of showers and risk of a thunderstorm. Wind becoming north 20 km/h near midnight. Low 19.

Extended 3-7 day forecast.

Past 0-2 day forecasts
Sat Aug 16 19:17 UTC
Sun Aug 17 08:46 UTC
Sun Aug 17 08:56 UTC
Sun Aug 17 14:48 UTC
Sun Aug 17 18:12 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)