S
M
T
W
T
F
S
30
68°
42°
31
77°
29°
1
70°
45°
2
N/A
3
70°
41°
4
76°
42°
5
77°
38°
6
76°
45°
7
61°
38°
8
67°
37°
9
70°
40°
10
71°
43°
11
74°
43°
12
70°
42°
13
69°
42°
14
73°
41°
15
74°
42°
16
80°
38°
17
71°
34°
18
68°
36°
19
61°
29°
20
61°
30°
21
62°
35°
22
67°
37°
23
72°
38°
24
66°
28°
25
57°
25°
26
58°
29°
27
62°
30°
28
67°
32°
29
69°
33°
30
69°
33°
1
67°
32°
2
68°
34°
3
67°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Jackson Hole Airport
Jackson Hole Airport's September 2026 forecast shows daily high temperatures ranging from 57° to 80°, with overnight lows between 25° and 45°. The average high for September is 68° with an average low of 36°. 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 Jackson Hole Airport. See also: October | November | December.