Average data for 10 years
1 September
Monday
+23°
+20°
2 September
Tuesday
+23°
+19°
3 September
Wednesday
+23°
+19°
4 September
Thursday
+21°
+18°
5 September
Friday
+22°
+17°
6 September
Saturday
+22°
+18°
7 September
Sunday
+21°
+18°
8 September
Monday
+20°
+18°
9 September
Tuesday
+21°
+17°
10 September
Wednesday
+20°
+18°
11 September
Thursday
+19°
+16°
12 September
Friday
+19°
+16°
13 September
Saturday
+20°
+15°
14 September
Sunday
+19°
+17°
15 September
Monday
+17°
+14°
16 September
Tuesday
+18°
+13°
17 September
Wednesday
+20°
+16°
18 September
Thursday
+18°
+15°
19 September
Friday
+19°
+15°
20 September
Saturday
+21°
+17°
21 September
Sunday
+19°
+17°
22 September
Monday
+20°
+15°
23 September
Tuesday
+20°
+16°
24 September
Wednesday
+19°
+15°
25 September
Thursday
+20°
+15°
26 September
Friday
+19°
+16°
27 September
Saturday
+18°
+15°
28 September
Sunday
+18°
+15°
29 September
Monday
+15°
+13°
30 September
Tuesday
+15°
+12°
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In September, the weather in Markham is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Markham has 14 sunny, 9 rainy, and 7 partly cloudy days in September. The rains are usually moderate.