S
M
T
W
T
F
S
30
76°
50°
31
78°
50°
1
80°
49°
2
73°
43°
3
77°
50°
4
82°
50°
5
82°
49°
6
83°
50°
7
81°
49°
8
80°
48°
9
81°
48°
10
75°
46°
11
72°
45°
12
71°
42°
13
70°
38°
14
69°
39°
15
70°
46°
16
73°
47°
17
77°
47°
18
68°
46°
19
68°
40°
20
70°
45°
21
71°
37°
22
70°
40°
23
70°
41°
24
73°
44°
25
75°
42°
26
77°
37°
27
67°
33°
28
64°
33°
29
63°
32°
30
64°
34°
1
66°
38°
2
69°
40°
3
68°
40°
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 63° to 83°, with overnight lows between 32° and 50°. The average high for September is 73° with an average low of 43°. 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.