S
M
T
W
T
F
S
30
81°
51°
31
83°
52°
1
70°
58°
2
73°
62°
3
77°
61°
4
84°
63°
5
77°
56°
6
74°
49°
7
82°
44°
8
77°
53°
9
72°
66°
10
82°
53°
11
73°
45°
12
77°
53°
13
79°
55°
14
77°
54°
15
76°
58°
16
75°
51°
17
74°
50°
18
69°
49°
19
68°
43°
20
67°
44°
21
71°
46°
22
66°
49°
23
66°
50°
24
70°
49°
25
70°
49°
26
73°
46°
27
65°
43°
28
68°
45°
29
72°
48°
30
73°
48°
1
72°
47°
2
70°
48°
3
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Henniker
Henniker's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 43° and 66°. The average high for September is 72° with an average low of 50°. 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 Henniker. See also: October | November | December.
