S
M
T
W
T
F
S
30
76°
54°
31
81°
58°
1
83°
58°
2
82°
60°
3
83°
61°
4
82°
51°
5
80°
57°
6
81°
58°
7
74°
57°
8
81°
58°
9
82°
58°
10
83°
57°
11
82°
58°
12
82°
59°
13
81°
58°
14
80°
57°
15
79°
56°
16
78°
57°
17
79°
54°
18
78°
48°
19
75°
47°
20
69°
46°
21
71°
46°
22
72°
44°
23
68°
45°
24
68°
52°
25
66°
54°
26
71°
53°
27
70°
54°
28
72°
54°
29
69°
53°
30
70°
42°
1
69°
40°
2
63°
39°
3
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alpine Valley
Alpine Valley's September 2026 forecast shows daily high temperatures ranging from 61° to 83°, with overnight lows between 38° and 61°. The average high for September is 75° with an average low of 53°. 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 Alpine Valley. See also: October | November | December.
