S
M
T
W
T
F
S
30
75°
43°
31
84°
47°
1
73°
47°
2
68°
48°
3
67°
41°
4
68°
42°
5
68°
41°
6
76°
48°
7
78°
47°
8
77°
46°
9
78°
43°
10
72°
47°
11
70°
42°
12
72°
48°
13
71°
44°
14
71°
47°
15
78°
47°
16
80°
46°
17
78°
45°
18
67°
42°
19
66°
43°
20
65°
37°
21
65°
35°
22
67°
41°
23
69°
43°
24
68°
44°
25
72°
44°
26
66°
42°
27
63°
39°
28
63°
34°
29
64°
33°
30
65°
42°
1
63°
41°
2
62°
33°
3
62°
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 62° to 84°, with overnight lows between 33° and 48°. The average high for September is 70° 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.