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Current
Hourly
7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Markham, ON
Exceptional El Niño dominates this fall
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Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
17°
20
20°
21
16°
22
16°
23
16°
24
17°
25
20°
26
20°
27
21°
28
20°
29
19°
30
19°
Forecast
Saturday, September 19, 2026
Day
17°
Feels 16
Wind
18 km/h E
Gust
27 km/h
Humidity
62%
P.O.P
20%
Night
11°
Feels 10
Wind
14 km/h NE
Gust
21 km/h
Humidity
82%
P.O.P
40%
Historical Averages
Sep 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
September
Average Temperature
High
22°
Feels 22
Low
12°
Feels 11
Average Precipitation
10 Days
Rain amount
70.5mm
Snow amount
0cm