S
M
T
W
T
F
S
30
84°
60°
31
78°
60°
1
78°
61°
2
79°
59°
3
78°
64°
4
79°
59°
5
82°
59°
6
78°
58°
7
77°
57°
8
76°
58°
9
76°
57°
10
79°
62°
11
81°
63°
12
80°
62°
13
Hist. Avg.
81°
61°
14
Hist. Avg.
80°
61°
15
Hist. Avg.
80°
60°
16
Hist. Avg.
80°
60°
17
Hist. Avg.
79°
59°
18
Hist. Avg.
79°
59°
19
Hist. Avg.
78°
58°
20
Hist. Avg.
78°
58°
21
Hist. Avg.
78°
57°
22
Hist. Avg.
77°
57°
23
Hist. Avg.
77°
56°
24
Hist. Avg.
76°
56°
25
Hist. Avg.
76°
55°
26
Hist. Avg.
76°
55°
27
Hist. Avg.
75°
54°
28
Hist. Avg.
75°
54°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
74°
53°
1
Hist. Avg.
74°
53°
2
Hist. Avg.
73°
52°
3
Hist. Avg.
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Alpine
Alpine's September 2026 forecast shows daily high temperatures ranging from 76° to 84°, with overnight lows between 57° and 64°. The average high for September is 79° with an average low of 60°. 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. See also: October | November | December.
