S
M
T
W
T
F
S
30
71°
50°
31
70°
49°
1
72°
53°
2
72°
58°
3
71°
59°
4
79°
59°
5
80°
58°
6
79°
50°
7
76°
49°
8
71°
49°
9
72°
48°
10
69°
51°
11
69°
53°
12
68°
48°
13
72°
52°
14
75°
54°
15
74°
53°
16
67°
52°
17
68°
53°
18
70°
52°
19
73°
45°
20
68°
47°
21
70°
45°
22
72°
43°
23
65°
43°
24
64°
44°
25
64°
46°
26
63°
42°
27
63°
43°
28
64°
44°
29
61°
41°
30
62°
41°
1
61°
46°
2
68°
41°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jaffrey Town
Jaffrey Town's September 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 41° and 59°. The average high for September is 69° with an average low of 49°. 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 Jaffrey Town. See also: October | November | December.