S
M
T
W
T
F
S
30
80°
58°
31
77°
66°
1
74°
63°
2
74°
66°
3
82°
65°
4
85°
60°
5
79°
59°
6
78°
54°
7
80°
60°
8
80°
57°
9
79°
62°
10
83°
61°
11
81°
61°
12
79°
59°
13
78°
61°
14
75°
57°
15
76°
55°
16
72°
59°
17
75°
54°
18
71°
51°
19
77°
56°
20
78°
56°
21
74°
53°
22
72°
54°
23
72°
57°
24
75°
54°
25
72°
53°
26
74°
56°
27
75°
56°
28
74°
51°
29
66°
48°
30
67°
50°
1
65°
46°
2
65°
50°
3
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hamden
Hamden's September 2026 forecast shows daily high temperatures ranging from 64° to 85°, with overnight lows between 46° and 66°. The average high for September is 75° 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 Hamden. See also: October | November | December.
