S
M
T
W
T
F
S
30
71°
38°
31
72°
39°
1
70°
36°
2
69°
36°
3
67°
39°
4
70°
36°
5
70°
36°
6
71°
38°
7
66°
34°
8
68°
38°
9
67°
39°
10
70°
31°
11
68°
36°
12
70°
38°
13
68°
36°
14
70°
38°
15
Hist. Avg.
71°
35°
16
Hist. Avg.
70°
34°
17
Hist. Avg.
70°
34°
18
Hist. Avg.
70°
33°
19
Hist. Avg.
69°
33°
20
Hist. Avg.
69°
33°
21
Hist. Avg.
69°
32°
22
Hist. Avg.
68°
32°
23
Hist. Avg.
68°
31°
24
Hist. Avg.
68°
31°
25
Hist. Avg.
67°
31°
26
Hist. Avg.
67°
30°
27
Hist. Avg.
66°
30°
28
Hist. Avg.
66°
30°
29
Hist. Avg.
66°
29°
30
Hist. Avg.
65°
29°
1
Hist. Avg.
65°
28°
2
Hist. Avg.
65°
28°
3
Hist. Avg.
64°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vail
Vail's September 2026 forecast shows daily high temperatures ranging from 66° to 72°, with overnight lows between 31° and 39°. The average high for September is 69° with an average low of 37°. 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 Vail. See also: October | November | December.