S
M
T
W
T
F
S
30
80°
66°
31
80°
67°
1
83°
62°
2
80°
61°
3
81°
62°
4
81°
61°
5
80°
61°
6
77°
60°
7
78°
58°
8
76°
59°
9
75°
53°
10
70°
57°
11
72°
57°
12
73°
57°
13
75°
58°
14
75°
58°
15
74°
57°
16
74°
56°
17
70°
57°
18
74°
57°
19
71°
56°
20
73°
57°
21
73°
57°
22
74°
56°
23
73°
55°
24
68°
53°
25
63°
51°
26
65°
53°
27
69°
53°
28
70°
54°
29
71°
54°
30
71°
53°
1
70°
53°
2
70°
54°
3
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Colborne
Colborne's September 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 51° and 67°. The average high for September is 74° with an average low of 57°. 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 Colborne. See also: October | November | December.
