Photo: StuartMiles - Freerange StockSt. Catharines Weather Forecast
For Thursday May 12, 2022
- Tonight – Clear. Low 9.
- Thursday – Sunny. High 25 except 18 near Lake Ontario. Humidex 28. UV index 9 or very high.
- Thursday Night – Clear. Low 9.
St. Catharines Weather Forecast
For Wednesday May 11
- Tonight – Clear. Low 6.
- Wednesday – Sunny. High 26 except 20 near Lake Ontario. UV index 9 or very high.
- Wednesday Night – Clear. Low 8.
St. Catharines Weather Forecast
For Tuesday May 10, 2022
- Tonight – Clear. Low 7.
- Tuesday – Sunny. High 20. UV index 9 or very high.
- Tuesday Night – Clear. Low 7.
St. Catharines Weather Forecast
For Saturday May 7, 2022
- Tonight – Mainly cloudy. Wind northeast 30 km/h gusting to 50. Low 6.
- Saturday – Cloudy. Clearing late in the afternoon. Wind northeast 30 km/h gusting to 50. High 13. UV index 6 or high.
- Saturday Night – Clear. Wind northeast 20 km/h becoming light near midnight. Low plus 4.
St. Catharines Weather Forecast
For Friday May 6, 2022
- Tonight – Partly cloudy. Low 6.
- Friday – Clearing in the morning. Wind becoming northeast 30 km/h gusting to 50 in the morning. High 14. UV index 8 or very high.
- Friday Night – Partly cloudy. Wind northeast 20 km/h gusting to 40. Low 7.
St. Catharines Weather Forecast
For Thursday May 5, 2022
- Tonight – Clearing early this evening. Low plus 2.
- Thursday – Sunny. High 14. UV index 8 or very high.
- Thursday Night – A few clouds. Low plus 3.
St. Catharines Weather Forecast
For Wednesday May 4, 2022
- Tonight – A few showers ending near midnight then cloudy with 60 percent chance of showers. Risk of thunderstorms late this evening. Fog patches. Wind northeast 20 km/h becoming light near midnight. Low 8.
- Wednesday – Cloudy. 40 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud late in the afternoon. Fog patches dissipating in the morning. High 16 except 12 along the lakeshore. UV index 3 or moderate.
- Wednesday Night – Clear. Low plus 2.
St. Catharines Weather Forecast
For Tuesday May 3, 2022
- Tonight – Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing this evening. Wind southwest 20 km/h becoming light early this evening. Low 6.
- Tuesday – A mix of sun and cloud. Becoming cloudy late in the morning with 40 percent chance of showers in the afternoon. Rain beginning late in the afternoon. Risk of a thunderstorm late in the afternoon. Amount 5 mm. Wind becoming northeast 20 km/h in the afternoon. High 15. UV index 7 or high.
- Tuesday Night – Showers at times heavy ending near midnight then cloudy with 40 percent chance of showers. Risk of a thunderstorm in the evening and overnight. Amount 10 to 20 mm. Wind northeast 20 km/h becoming light after midnight. Low 8.
St. Catharines Weather Forecast
For Saturday April 30, 2022
- Tonight – Clear. Low zero with patchy frost.
- Saturday – Sunny. Fog patches dissipating early in the morning. High 13. UV index 7 or high.
- Saturday Night – Clear. Low plus 3.
St. Catharines Weather Forecast
Friday April 29, 2022
- Thursday night will be clear. Low minus 1.
- Friday will be sunny. High 11. UV index 6 or high.
- Friday night will be clear. Wind up to 15 km/h. Low minus 2. Wind chill minus 4 overnight.