S
M
T
W
T
F
S
30
75°
62°
31
78°
67°
1
80°
68°
2
80°
67°
3
76°
65°
4
75°
61°
5
73°
60°
6
73°
59°
7
75°
65°
8
79°
60°
9
72°
58°
10
73°
58°
11
75°
54°
12
70°
56°
13
71°
56°
14
69°
55°
15
70°
56°
16
71°
55°
17
70°
55°
18
74°
56°
19
69°
54°
20
69°
52°
21
68°
53°
22
68°
54°
23
70°
57°
24
74°
53°
25
74°
58°
26
73°
59°
27
67°
55°
28
66°
55°
29
72°
54°
30
70°
50°
1
65°
54°
2
69°
59°
3
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Commack
Commack's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 48° and 68°. The average high for September is 72° with an average low of 57°. 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 Commack. See also: October | November | December.
