S
M
T
W
T
F
S
30
80°
50°
31
83°
50°
1
83°
51°
2
82°
50°
3
82°
49°
4
81°
49°
5
77°
48°
6
76°
49°
7
78°
49°
8
81°
48°
9
83°
49°
10
81°
48°
11
72°
48°
12
73°
47°
13
80°
47°
14
76°
46°
15
79°
48°
16
81°
48°
17
80°
47°
18
80°
48°
19
79°
48°
20
80°
47°
21
79°
48°
22
78°
46°
23
67°
44°
24
67°
44°
25
69°
36°
26
69°
40°
27
74°
42°
28
77°
34°
29
76°
36°
30
71°
35°
1
75°
33°
2
73°
42°
3
72°
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 67° to 83°, with overnight lows between 33° and 51°. The average high for September is 77° with an average low of 45°. 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.