St. Catharines, Ontario Weather - Tomorrow’s Forecast

Wednesday

Chance of showers

High:
8°C

Cloudy with 40 percent chance of showers in the morning and early in the afternoon then a mix of sun and cloud. Wind becoming north 30 km/h gusting to 50 in the morning. High 8. UV index 4 or moderate.

Wednesday Night

Clear

Overnight low:
-1°C

Clear. Wind north 20 km/h becoming light near midnight. Low minus 1 with frost.

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