Both Ontario and Quebec are on track for a significant temperature drop as a taste of early fall arrives by the end of August.

Hurricane Erin’s track across the Atlantic is making waves beyond the ocean, influencing the jet stream over Eastern Canada with a deep trough settling over the region early next week.

[Baron - Jet stream set up August] Baron - Jet stream set up August

As Erin merges with a secondary low moving from Greenland towards Europe, atmospheric patterns are expected to lock the trough over the Great Lakes.

DON'T MISS: U.S., CANADA EAST COAST BRACES FOR ERIN'S DANGEROUS SWELLS, RIP CURRENTS

High pressure over the Atlantic will reinforce this setup, leading to unseasonably cool weather for Ontario and Quebec.

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