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| Extended Forecast - Environment Canada | ||||||
Wednesday
 Mainly sunny Max: 25°C |
Thursday
 Showers or thundershowers Max: 23°C |
Friday
 Chance of showers Max: 28°C |
Saturday
 Chance of showers Max: 26°C |
Sunday
 A mix of sun and cloud Max: 21°C |
Monday
A mix of sun and cloud Max: 23°C |
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Tonight
 Chance of showers Min: 10°C |
Wednesday Night
Chance of showers Min: 15°C |
Thursday Night
 Chance of showers or thundershowers Min: 19°C |
Friday Night
 Chance of showers Min: 19°C |
Saturday Night
 Cloudy periods Min: 16°C |
Sunday Night
Cloudy periods Min: 14°C |
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Forecast
Markham, ON (Issued: 3:30 PM EDT Tuesday 27 June 2017)
- Tuesday night
- Mainly cloudy with 40 percent chance of showers early this evening and risk of a thunderstorm. Clearing this evening. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low 10.
- Wednesday
- Sunny. Becoming a mix of sun and cloud near noon. Wind becoming southwest 20 km/h gusting to 40 near noon. High 25. Humidex 27. UV index 8 or very high.
- Wednesday night
- Increasing cloudiness. 40 percent chance of showers overnight with risk of a thunderstorm. Wind southwest 20 km/h gusting to 40 becoming light in the evening. Low 15.
- Thursday
- Showers or thunderstorms. High 23.
- Thursday night
- Cloudy periods with 60 percent chance of showers or thunderstorms. Low 19.
- Friday
- A mix of sun and cloud with 40 percent chance of showers. High 28.
- Friday night
- Cloudy periods with 60 percent chance of showers. Low 19.
- Saturday
- A mix of sun and cloud with 30 percent chance of showers. High 26.
- Saturday night
- Cloudy periods. Low 16.
- Sunday
- A mix of sun and cloud. High 21.
- Sunday night
- Cloudy periods. Low 14.
- Monday
- A mix of sun and cloud. High 23.