S
M
T
W
T
F
S
30
82°
51°
31
84°
52°
1
85°
52°
2
85°
51°
3
84°
52°
4
83°
49°
5
83°
49°
6
85°
48°
7
82°
49°
8
83°
48°
9
75°
45°
10
73°
44°
11
72°
38°
12
70°
37°
13
69°
39°
14
71°
45°
15
71°
40°
16
69°
40°
17
70°
41°
18
73°
46°
19
78°
47°
20
80°
38°
21
70°
34°
22
68°
38°
23
69°
42°
24
70°
44°
25
76°
46°
26
77°
46°
27
78°
44°
28
79°
45°
29
78°
35°
30
75°
39°
1
70°
41°
2
75°
32°
3
64°
29°
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 64° to 85°, with overnight lows between 29° and 52°. The average high for September is 76° 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.