S
M
T
W
T
F
S
30
72°
45°
31
79°
39°
1
77°
46°
2
68°
46°
3
66°
43°
4
70°
50°
5
72°
49°
6
75°
46°
7
62°
40°
8
68°
48°
9
77°
49°
10
79°
52°
11
76°
51°
12
74°
47°
13
73°
46°
14
71°
47°
15
73°
49°
16
76°
50°
17
76°
47°
18
75°
43°
19
66°
38°
20
66°
41°
21
77°
49°
22
66°
47°
23
66°
41°
24
68°
48°
25
71°
48°
26
71°
47°
27
69°
43°
28
64°
35°
29
60°
34°
30
60°
34°
1
61°
38°
2
63°
39°
3
69°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hailey
Hailey's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 34° and 52°. The average high for September is 70° with an average low of 44°. 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 Hailey. See also: October | November | December.
