S
M
T
W
T
F
S
30
61°
34°
31
62°
36°
1
61°
38°
2
61°
36°
3
62°
36°
4
62°
36°
5
63°
40°
6
62°
36°
7
62°
38°
8
67°
43°
9
66°
40°
10
64°
38°
11
63°
41°
12
69°
37°
13
68°
37°
14
70°
42°
15
64°
40°
16
64°
41°
17
65°
41°
18
64°
37°
19
65°
38°
20
70°
44°
21
71°
46°
22
71°
42°
23
70°
39°
24
66°
38°
25
67°
39°
26
66°
38°
27
67°
39°
28
66°
38°
29
66°
39°
30
67°
46°
1
67°
44°
2
70°
40°
3
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Orangeville
Orangeville's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 34° and 46°. The average high for September is 66° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Orangeville. See also: October | November | December.