S
M
T
W
T
F
S
30
77°
62°
31
78°
62°
1
76°
61°
2
71°
59°
3
70°
58°
4
70°
59°
5
73°
61°
6
77°
62°
7
78°
61°
8
78°
61°
9
77°
60°
10
77°
60°
11
74°
59°
12
77°
60°
13
75°
61°
14
72°
49°
15
65°
49°
16
67°
52°
17
68°
53°
18
66°
47°
19
66°
50°
20
67°
53°
21
73°
55°
22
73°
55°
23
72°
46°
24
65°
46°
25
67°
49°
26
72°
55°
27
71°
52°
28
67°
44°
29
65°
40°
30
60°
44°
1
60°
52°
2
67°
48°
3
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Welland
Welland's September 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 40° and 62°. The average high for September is 71° with an average low of 54°. 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 Welland. See also: October | November | December.
