Wednesday
Mainly sunny
High:
27°C
Mainly sunny. Hazy. Wind southwest 30 km/h gusting to 50. High 27. Humidex 31. UV index 9 or very high.
St. Thomas, Ontario Weather - Tomorrow’s Forecast
Wednesday Night
Chance of showers
Overnight low:
19°C
Cloudy. 40 percent chance of showers in the evening. A few showers beginning near midnight. Risk of a thunderstorm in the evening and overnight. Wind southwest 30 km/h gusting to 50 becoming northwest 20 then light late in the evening. Low 19.
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