S
M
T
W
T
F
S
30
94°
47°
31
91°
51°
1
89°
55°
2
86°
39°
3
87°
42°
4
89°
42°
5
89°
43°
6
90°
42°
7
87°
43°
8
92°
42°
9
97°
54°
10
97°
55°
11
98°
61°
12
96°
45°
13
94°
46°
14
87°
55°
15
89°
43°
16
86°
40°
17
88°
46°
18
85°
48°
19
86°
47°
20
84°
51°
21
86°
49°
22
89°
48°
23
88°
49°
24
86°
48°
25
87°
47°
26
85°
48°
27
85°
47°
28
84°
46°
29
85°
44°
30
84°
43°
1
80°
47°
2
81°
48°
3
82°
47°
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 43° and 51°. The average high for September is 85° with an average low of 47°. 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.