7-Day Forecast Summary
7-Day Detailed Weather Forecast for Markham
This Afternoon |
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Temperature: 88°F Wind Speed: 0 mph Wind Direction: Forecast: Mostly sunny, with a high near 88. Heat index values as high as 104. South wind around 0 mph. New rainfall amounts less than a tenth of an inch possible. |
Tonight |
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Temperature: 80°F Wind Speed: 0 to 15 mph Wind Direction: SW Forecast: Partly cloudy, with a low around 80. Heat index values as high as 108. Southwest wind 0 to 15 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible. |
Thursday |
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Temperature: 91°F Wind Speed: 10 to 15 mph Wind Direction: S Forecast: Mostly sunny, with a high near 91. Heat index values as high as 112. South wind 10 to 15 mph, with gusts as high as 25 mph. |
Thursday Night |
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Temperature: 82°F Wind Speed: 10 to 15 mph Wind Direction: SE Forecast: Mostly cloudy, with a low around 82. Heat index values as high as 112. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. |
Juneteenth |
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Temperature: 91°F Wind Speed: 10 to 15 mph Wind Direction: SE Forecast: Partly sunny, with a high near 91. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. |
Friday Night |
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Temperature: 81°F Wind Speed: 10 to 15 mph Wind Direction: SE Forecast: A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 81. Chance of precipitation is 20%. |
Saturday |
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Temperature: 90°F Wind Speed: 10 to 15 mph Wind Direction: SE Forecast: A slight chance of showers and thunderstorms before 7am. Partly sunny, with a high near 90. Chance of precipitation is 20%. |
Saturday Night |
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Temperature: 80°F Wind Speed: 10 to 15 mph Wind Direction: S Forecast: Partly cloudy, with a low around 80. |
Sunday |
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Temperature: 90°F Wind Speed: 15 to 20 mph Wind Direction: S Forecast: Mostly sunny, with a high near 90. |
Sunday Night |
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Temperature: 81°F Wind Speed: 15 mph Wind Direction: S Forecast: Partly cloudy, with a low around 81. |
Monday |
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Temperature: 91°F Wind Speed: 15 mph Wind Direction: S Forecast: Mostly sunny, with a high near 91. |
Monday Night |
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Temperature: 80°F Wind Speed: 5 to 15 mph Wind Direction: SE Forecast: Mostly clear, with a low around 80. |
Tuesday |
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Temperature: 92°F Wind Speed: 5 to 10 mph Wind Direction: S Forecast: Mostly sunny, with a high near 92. |
Tuesday Night |
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Temperature: 78°F Wind Speed: 5 to 10 mph Wind Direction: S Forecast: Mostly clear, with a low around 78. |

