S
M
T
W
T
F
S
30
68°
42°
31
77°
29°
1
70°
45°
2
72°
43°
3
71°
41°
4
77°
34°
5
79°
40°
6
79°
36°
7
63°
36°
8
70°
29°
9
72°
30°
10
76°
30°
11
74°
50°
12
76°
36°
13
77°
38°
14
59°
33°
15
71°
24°
16
56°
45°
17
57°
45°
18
57°
40°
19
51°
39°
20
56°
37°
21
66°
35°
22
65°
34°
23
67°
35°
24
68°
38°
25
63°
41°
26
63°
39°
27
59°
34°
28
61°
35°
29
60°
30°
30
53°
31°
1
53°
28°
2
59°
35°
3
57°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jackson Hole
Jackson Hole's September 2026 forecast shows daily high temperatures ranging from 51° to 68°, with overnight lows between 28° and 45°. The average high for September is 60° 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. See also: October | November | December.
