S
M
T
W
T
F
S
30
87°
59°
31
80°
58°
1
79°
59°
2
79°
62°
3
80°
59°
4
82°
65°
5
85°
64°
6
87°
57°
7
83°
59°
8
78°
56°
9
78°
56°
10
77°
62°
11
81°
55°
12
79°
56°
13
76°
55°
14
75°
61°
15
79°
62°
16
82°
53°
17
82°
52°
18
74°
52°
19
72°
53°
20
73°
56°
21
72°
54°
22
72°
52°
23
71°
57°
24
72°
56°
25
72°
57°
26
77°
57°
27
77°
52°
28
78°
49°
29
70°
52°
30
69°
55°
1
70°
56°
2
74°
53°
3
75°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Collingswood
Collingswood's September 2026 forecast shows daily high temperatures ranging from 69° to 87°, with overnight lows between 48° and 65°. The average high for September is 77° with an average low of 56°. 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 Collingswood. See also: October | November | December.
