S
M
T
W
T
F
S
30
75°
55°
31
72°
55°
1
73°
64°
2
75°
59°
3
76°
54°
4
70°
55°
5
71°
55°
6
73°
53°
7
74°
49°
8
71°
60°
9
71°
56°
10
72°
45°
11
70°
47°
12
74°
58°
13
74°
53°
14
68°
52°
15
70°
51°
16
69°
49°
17
68°
46°
18
62°
45°
19
62°
45°
20
63°
44°
21
60°
43°
22
61°
48°
23
66°
49°
24
69°
49°
25
68°
48°
26
68°
46°
27
64°
44°
28
67°
47°
29
68°
48°
30
69°
49°
1
69°
48°
2
67°
45°
3
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Renfrew
Renfrew's September 2026 forecast shows daily high temperatures ranging from 60° to 74°, with overnight lows between 43° and 60°. The average high for September is 68° with an average low of 48°. 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 Renfrew. See also: October | November | December.
