S
M
T
W
T
F
S
30
79°
49°
31
82°
49°
1
84°
52°
2
87°
56°
3
88°
48°
4
86°
43°
5
74°
43°
6
75°
50°
7
80°
48°
8
81°
46°
9
76°
48°
10
77°
46°
11
77°
43°
12
78°
42°
13
76°
47°
14
81°
41°
15
74°
38°
16
69°
38°
17
68°
36°
18
68°
38°
19
69°
40°
20
72°
40°
21
77°
46°
22
78°
44°
23
68°
38°
24
67°
39°
25
66°
38°
26
67°
37°
27
65°
36°
28
64°
38°
29
65°
37°
30
Hist. Avg.
64°
31°
1
Hist. Avg.
64°
31°
2
Hist. Avg.
63°
31°
3
Hist. Avg.
63°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hailey-Bellevue
Hailey-Bellevue's September 2026 forecast shows daily high temperatures ranging from 64° to 88°, with overnight lows between 36° and 56°. The average high for September is 75° with an average low of 43°. 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-Bellevue. See also: October | November | December.
