S
M
T
W
T
F
S
30
69°
61°
31
74°
63°
1
85°
64°
2
83°
62°
3
80°
61°
4
72°
58°
5
74°
58°
6
74°
53°
7
76°
49°
8
75°
51°
9
73°
63°
10
75°
49°
11
72°
44°
12
77°
47°
13
76°
50°
14
66°
43°
15
70°
45°
16
75°
57°
17
73°
54°
18
67°
47°
19
62°
47°
20
67°
52°
21
60°
39°
22
59°
44°
23
60°
43°
24
62°
40°
25
65°
44°
26
69°
46°
27
68°
46°
28
64°
45°
29
66°
49°
30
64°
47°
1
63°
48°
2
64°
49°
3
58°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Guelph/Eramosa
Guelph/Eramosa's September 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 39° and 49°. The average high for September is 63° with an average low of 45°. 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 Guelph/Eramosa. See also: October | November | December.
