S
M
T
W
T
F
S
30
81°
58°
31
79°
57°
1
76°
61°
2
76°
57°
3
77°
53°
4
76°
57°
5
75°
61°
6
83°
62°
7
84°
61°
8
83°
60°
9
83°
57°
10
75°
59°
11
74°
58°
12
73°
60°
13
82°
56°
14
81°
55°
15
Hist. Avg.
75°
55°
16
Hist. Avg.
75°
54°
17
Hist. Avg.
74°
54°
18
Hist. Avg.
74°
53°
19
Hist. Avg.
74°
53°
20
Hist. Avg.
73°
52°
21
Hist. Avg.
73°
52°
22
Hist. Avg.
72°
51°
23
Hist. Avg.
72°
51°
24
Hist. Avg.
72°
50°
25
Hist. Avg.
71°
50°
26
Hist. Avg.
71°
50°
27
Hist. Avg.
70°
49°
28
Hist. Avg.
70°
49°
29
Hist. Avg.
69°
48°
30
Hist. Avg.
69°
48°
1
Hist. Avg.
68°
48°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Middlebury
Middlebury's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 53° and 62°. The average high for September is 79° with an average low of 58°. 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 Middlebury. See also: October | November | December.