S
M
T
W
T
F
S
30
76°
58°
31
78°
57°
1
76°
51°
2
76°
51°
3
74°
50°
4
75°
49°
5
74°
50°
6
76°
56°
7
78°
55°
8
74°
55°
9
75°
54°
10
78°
51°
11
77°
55°
12
78°
55°
13
78°
54°
14
80°
54°
15
79°
53°
16
78°
52°
17
72°
53°
18
77°
54°
19
78°
53°
20
76°
52°
21
77°
45°
22
74°
45°
23
Hist. Avg.
72°
47°
24
Hist. Avg.
71°
47°
25
Hist. Avg.
71°
46°
26
Hist. Avg.
70°
46°
27
Hist. Avg.
70°
46°
28
Hist. Avg.
70°
45°
29
Hist. Avg.
69°
45°
30
Hist. Avg.
69°
45°
1
Hist. Avg.
68°
44°
2
Hist. Avg.
68°
44°
3
Hist. Avg.
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Renfrew
Renfrew's September 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 45° and 58°. The average high for September is 76° with an average low of 53°. 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.
