S
M
T
W
T
F
S
30
76°
55°
31
80°
58°
1
80°
50°
2
78°
49°
3
72°
50°
4
74°
53°
5
77°
58°
6
78°
53°
7
78°
49°
8
71°
52°
9
71°
56°
10
72°
56°
11
76°
55°
12
74°
53°
13
70°
54°
14
68°
47°
15
69°
46°
16
68°
45°
17
68°
49°
18
69°
50°
19
72°
52°
20
69°
53°
21
72°
50°
22
68°
43°
23
66°
49°
24
65°
52°
25
69°
46°
26
63°
46°
27
69°
50°
28
70°
49°
29
Hist. Avg.
66°
45°
30
Hist. Avg.
65°
44°
1
Hist. Avg.
65°
44°
2
Hist. Avg.
64°
44°
3
Hist. Avg.
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Jaffrey
Jaffrey's September 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 43° and 58°. The average high for September is 72° with an average low of 51°. 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. See also: October | November | December.
