S
M
T
W
T
F
S
30
72°
64°
31
69°
65°
1
75°
67°
2
73°
66°
3
74°
64°
4
73°
61°
5
74°
58°
6
72°
56°
7
73°
55°
8
78°
56°
9
73°
65°
10
69°
61°
11
72°
49°
12
76°
55°
13
71°
54°
14
63°
51°
15
68°
51°
16
69°
56°
17
69°
51°
18
64°
48°
19
63°
44°
20
66°
46°
21
59°
43°
22
N/A
23
69°
41°
24
66°
47°
25
68°
41°
26
72°
46°
27
74°
50°
28
68°
56°
29
66°
58°
30
67°
58°
1
66°
62°
2
62°
46°
3
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Beaverton
Beaverton's September 2026 forecast shows daily high temperatures ranging from 60° to 60°, with overnight lows between 47° and 47°. The average high for September is 60° with an average low of 47°. 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 Beaverton. See also: October | November | December.
