Ontario Long Range Weather Forecast for July 30th to August 29th
July 2025
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28Hot; risk of hit-or-miss thunderstorms.
August 2025
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1Squally weather sweeps east through the Great Lakes; torrential rains soak southern Ontario.
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4Fair, hot weather coincides with Simcoe Day festivities.
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8Showery.
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12Fair skies, then turning squally from western Ontario and all points east.
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16Violent thunderstorms Great Lakes area, then fair.
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20Fair, then showery.
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24Mostly fair and hot.
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28Very unsettled.
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