S
M
T
W
T
F
S
30
89°
56°
31
89°
55°
1
88°
52°
2
88°
49°
3
89°
53°
4
88°
53°
5
87°
52°
6
87°
51°
7
88°
52°
8
88°
54°
9
89°
53°
10
88°
52°
11
89°
53°
12
90°
51°
13
89°
52°
14
84°
45°
15
84°
45°
16
85°
48°
17
89°
49°
18
90°
48°
19
89°
47°
20
88°
49°
21
92°
52°
22
89°
46°
23
88°
46°
24
88°
49°
25
87°
51°
26
90°
51°
27
90°
50°
28
89°
48°
29
87°
45°
30
87°
44°
1
86°
43°
2
78°
38°
3
77°
35°
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 77° to 92°, with overnight lows between 35° and 56°. The average high for September is 88° with an average low of 49°. 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.