S
M
T
W
T
F
S
30
91°
70°
31
93°
70°
1
96°
70°
2
98°
71°
3
97°
73°
4
97°
72°
5
100°
73°
6
98°
71°
7
82°
67°
8
86°
66°
9
87°
69°
10
86°
71°
11
89°
69°
12
86°
70°
13
87°
68°
14
89°
69°
15
89°
68°
16
86°
68°
17
86°
65°
18
87°
67°
19
84°
65°
20
83°
51°
21
86°
66°
22
85°
65°
23
85°
66°
24
84°
65°
25
84°
65°
26
83°
64°
27
85°
65°
28
84°
65°
29
83°
64°
30
83°
64°
1
82°
63°
2
82°
62°
3
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bishop
Bishop's September 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 51° and 71°. The average high for September is 85° with an average low of 65°. 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 Bishop. See also: October | November | December.