S
M
T
W
T
F
S
30
79°
39°
31
88°
45°
1
77°
55°
2
61°
50°
3
63°
43°
4
61°
41°
5
70°
52°
6
59°
45°
7
72°
45°
8
81°
43°
9
90°
48°
10
86°
50°
11
73°
42°
12
71°
43°
13
60°
36°
14
69°
38°
15
73°
40°
16
74°
43°
17
80°
47°
18
81°
49°
19
80°
48°
20
78°
45°
21
76°
44°
22
77°
46°
23
76°
44°
24
73°
39°
25
65°
44°
26
67°
43°
27
64°
40°
28
64°
36°
29
65°
43°
30
65°
40°
1
74°
42°
2
73°
41°
3
73°
42°
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 60° to 81°, with overnight lows between 36° and 49°. The average high for September is 72° with an average low of 42°. 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.