S
M
T
W
T
F
S
30
79°
43°
31
75°
46°
1
80°
44°
2
76°
45°
3
76°
42°
4
82°
42°
5
79°
43°
6
78°
43°
7
80°
38°
8
80°
39°
9
75°
39°
10
76°
40°
11
73°
38°
12
74°
43°
13
73°
40°
14
71°
42°
15
73°
46°
16
78°
46°
17
80°
44°
18
77°
44°
19
71°
41°
20
73°
38°
21
78°
39°
22
77°
43°
23
78°
44°
24
75°
41°
25
69°
37°
26
68°
41°
27
76°
34°
28
66°
36°
29
65°
43°
30
65°
44°
1
66°
45°
2
75°
32°
3
72°
30°
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 65° to 82°, with overnight lows between 30° and 46°. The average high for September is 75° with an average low of 41°. 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.