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| Extended Forecast - Environment Canada | ||||||
Friday
 A mix of sun and cloud Max: 23°C |
Saturday
 Sunny Max: 26°C |
Sunday
Sunny Max: 28°C |
Monday
Sunny Max: 29°C |
Tuesday
 Chance of showers Max: 29°C |
Wednesday
 Chance of showers Max: 27°C |
Thursday
Chance of showers Max: 24°C |
Tonight
 A few clouds Min: 15°C |
Saturday Night
 Clear Min: 12°C |
Sunday Night
Clear Min: 15°C |
Monday Night
Clear Min: 17°C |
Tuesday Night
 Chance of showers Min: 16°C |
Wednesday Night
 Chance of showers Min: 17°C |
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Forecast
Markham, ON (Issued: 5:00 AM EDT Friday 28 July 2017)
- Friday
- A mix of sun and cloud. Wind becoming northeast 20 km/h gusting to 40 this morning. High 23. Humidex 25. UV index 8 or very high.
- Friday night
- A few clouds. Wind northeast 20 km/h gusting to 40 becoming light this evening. Low 15.
- Saturday
- Sunny. Wind becoming northeast 20 km/h gusting to 40 in the morning. High 26. Humidex 27.
- Saturday night
- Clear. Low 12.
- Sunday
- Sunny. High 28.
- Sunday night
- Clear. Low 15.
- Monday
- Sunny. High 29.
- Monday night
- Clear. Low 17.
- Tuesday
- A mix of sun and cloud with 30 percent chance of showers. High 29.
- Tuesday night
- Cloudy periods with 30 percent chance of showers. Low 16.
- Wednesday
- A mix of sun and cloud with 40 percent chance of showers. High 27.
- Wednesday night
- Cloudy periods with 40 percent chance of showers. Low 17.
- Thursday
- A mix of sun and cloud with 30 percent chance of showers. High 24.