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Hourly
7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Ancaster, ON
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September
Average Temperature
High
22°
Feels 23
Low
12°
Feels 11
Average Precipitation
10 Days
Rain amount
73mm
Snow amount
0.1cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
25°
5
23°
6
21°
7
24°
8
24°
9
26°
10
22°
11
20°
12
22°
13
23°
14
23°
15
22°
16
22°
17
21°
18
21°
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Friday, September 4, 2026
Day
25°
Feels 30
Wind
14 km/h W
Gust
21 km/h
Humidity
61%
P.O.P
30%
Night
16°
Feels 15
Wind
13 km/h NE
Gust
20 km/h
Humidity
88%
P.O.P
20%
Historical Averages
Sep 4
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.