S
M
T
W
T
F
S
30
84°
64°
31
83°
64°
1
84°
60°
2
76°
56°
3
75°
58°
4
76°
56°
5
76°
56°
6
78°
62°
7
82°
62°
8
81°
61°
9
77°
62°
10
80°
62°
11
82°
61°
12
81°
62°
13
82°
62°
14
81°
52°
15
74°
52°
16
71°
51°
17
72°
52°
18
81°
58°
19
81°
59°
20
80°
59°
21
79°
53°
22
78°
48°
23
70°
49°
24
69°
50°
25
70°
56°
26
74°
56°
27
76°
54°
28
75°
55°
29
75°
54°
30
74°
55°
1
75°
54°
2
74°
48°
3
73°
45°
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 69° to 84°, with overnight lows between 45° and 64°. 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 Hamden. See also: October | November | December.
