Advance Weather

Ontario – South

Very High UV Index Tuesday

UV Index values will be in the Very High category for all areas. The highest UV Index will be 9.

by Advance Weather August 4, 2026August 3, 2026

Ontario – South

Daily Forecast: August 4, 2026

Tuesday will bring mainly sunny skies to the region, with temperatures relatively comparable to today.

by Austin Gagnier August 3, 2026August 3, 2026

Ontario – South

Very High UV Index Friday

UV Index values will be in the Very High category for all areas. The highest UV Index will be 9.

by Austin Gagnier July 31, 2026July 30, 2026

Ontario – South

Daily Forecast: July 31, 2026

Friday will bring mainly sunny skies to the region, with some clouds around at times.

by Austin Gagnier July 30, 2026July 30, 2026

Ontario – South

Very High UV Index Thursday

The highest UV Index will be in Chatham and Windsor, forecasted to be at 9.

by Austin Gagnier July 30, 2026July 29, 2026

Ontario – South

Daily Forecast: July 30, 2026

Mainly sunny skies are expected for much of the region. A mix of sun and cloud is expected in Eastern Ontario.

by Austin Gagnier July 29, 2026July 29, 2026

Ontario – South

Very High UV Index Wednesday

Eastern Ontario will see lower UV Index values due to showers in the forecast.

by Austin Gagnier July 29, 2026July 28, 2026

Ontario – South

Daily Forecast: July 29, 2026

Wednesday will bring a less humid day to the area, with rain showers continuing in Eastern Ontario and sunny skies elsewhere.

by Austin Gagnier July 28, 2026July 28, 2026

Ontario – South

High UV Index Tuesday

The highest UV Index will be in Tobermory, forecasted to be at 7.

by Advance Weather July 28, 2026July 28, 2026

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