Ontario Long Range Weather Forecast for May 20th to June 19th
May 2025
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20th - 23rd
The weather improves: showers, then fair.
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24th - 27th
Very unsettled.
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28th - 31st
Turning fair.
June 2025
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1st - 3rd
Increasingly cloudy.
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4th - 7th
Pleasant weather for Great Lakes.
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8th - 11th
Unsettled weather.
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12th - 15th
Pleasant conditions.
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16th - 19th
Clearing skies.
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20th - 23rd
Dangerous thunderstorms sweep into western Ontario.