S
M
T
W
T
F
S
30
91°
66°
31
95°
65°
1
96°
66°
2
98°
67°
3
97°
67°
4
95°
65°
5
95°
65°
6
97°
64°
7
96°
65°
8
97°
60°
9
89°
59°
10
89°
59°
11
90°
56°
12
89°
56°
13
87°
54°
14
86°
54°
15
87°
56°
16
87°
57°
17
88°
61°
18
88°
63°
19
91°
63°
20
89°
59°
21
85°
55°
22
86°
56°
23
86°
59°
24
87°
61°
25
91°
63°
26
91°
62°
27
92°
63°
28
93°
62°
29
92°
61°
30
92°
60°
1
90°
59°
2
90°
56°
3
85°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bend
Bend's September 2026 forecast shows daily high temperatures ranging from 85° to 98°, with overnight lows between 53° and 67°. The average high for September is 91° with an average low of 60°. 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 Bend. See also: October | November | December.