S
M
T
W
T
F
S
30
82°
66°
31
92°
69°
1
91°
68°
2
87°
64°
3
80°
68°
4
85°
68°
5
83°
60°
6
82°
60°
7
78°
61°
8
78°
63°
9
82°
56°
10
74°
55°
11
78°
58°
12
79°
57°
13
78°
54°
14
78°
53°
15
79°
55°
16
70°
48°
17
73°
54°
18
69°
52°
19
72°
54°
20
73°
53°
21
72°
53°
22
72°
51°
23
69°
51°
24
71°
50°
25
69°
50°
26
68°
45°
27
60°
42°
28
58°
39°
29
59°
40°
30
58°
38°
1
57°
46°
2
58°
47°
3
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Amherst Junction
Amherst Junction's September 2026 forecast shows daily high temperatures ranging from 57° to 85°, with overnight lows between 38° and 68°. The average high for September is 72° with an average low of 52°. 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 Amherst Junction. See also: October | November | December.
