Observed at: Toronto Buttonville Municipal Airport 6:00 PM EDT Sunday 19 May 2013
Issued: 3:30 PM EDT Sunday 19 May 2013
| A few clouds. Low 15. |
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| Mainly sunny. High 27. UV index 8 or very high. |
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| Increasing cloudiness. Showers beginning after midnight. Risk of a thunderstorm overnight. Low 17. |
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| Cloudy with 60 percent chance of showers. High 23. |
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| Showers. Low 16. High 25. |
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| Showers. Low 13. High 20. |
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| Cloudy with 60 percent chance of showers. Low 11. High 16. |
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| A mix of sun and cloud. Low 9. High 17. |
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