S
M
T
W
T
F
S
30
77°
58°
31
76°
59°
1
82°
54°
2
76°
55°
3
77°
53°
4
76°
51°
5
75°
51°
6
78°
56°
7
80°
56°
8
78°
55°
9
80°
56°
10
75°
56°
11
77°
55°
12
80°
55°
13
79°
54°
14
80°
55°
15
79°
54°
16
79°
48°
17
76°
52°
18
70°
54°
19
76°
53°
20
78°
54°
21
77°
52°
22
76°
45°
23
74°
50°
24
72°
49°
25
Hist. Avg.
69°
49°
26
Hist. Avg.
69°
49°
27
Hist. Avg.
69°
49°
28
Hist. Avg.
68°
48°
29
Hist. Avg.
68°
48°
30
Hist. Avg.
68°
48°
1
Hist. Avg.
67°
47°
2
Hist. Avg.
67°
47°
3
Hist. Avg.
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Hadley
South Hadley's September 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 45° and 59°. The average high for September is 77° 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 South Hadley. See also: October | November | December.