S
M
T
W
T
F
S
30
53°
40°
31
52°
37°
1
46°
39°
2
47°
37°
3
45°
35°
4
45°
36°
5
46°
28°
6
46°
34°
7
44°
32°
8
43°
32°
9
43°
34°
10
44°
31°
11
42°
30°
12
41°
31°
13
40°
30°
14
41°
37°
15
40°
32°
16
39°
30°
17
36°
32°
18
35°
30°
19
37°
29°
20
41°
32°
21
41°
36°
22
Hist. Avg.
37°
30°
23
Hist. Avg.
37°
30°
24
Hist. Avg.
36°
29°
25
Hist. Avg.
36°
29°
26
Hist. Avg.
35°
28°
27
Hist. Avg.
34°
28°
28
Hist. Avg.
34°
28°
29
Hist. Avg.
33°
27°
30
Hist. Avg.
32°
27°
1
Hist. Avg.
32°
26°
2
Hist. Avg.
31°
26°
3
Hist. Avg.
31°
25°
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 35° to 53°, with overnight lows between 28° and 40°. The average high for September is 43° with an average low of 33°. 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.
