S
M
T
W
T
F
S
30
67°
33°
31
66°
34°
1
66°
37°
2
65°
35°
3
63°
36°
4
64°
33°
5
62°
34°
6
63°
35°
7
66°
29°
8
65°
36°
9
65°
36°
10
62°
33°
11
61°
31°
12
62°
36°
13
65°
31°
14
62°
32°
15
66°
34°
16
68°
36°
17
68°
33°
18
67°
26°
19
59°
25°
20
62°
31°
21
65°
32°
22
67°
29°
23
66°
26°
24
59°
24°
25
62°
27°
26
57°
24°
27
57°
25°
28
Hist. Avg.
64°
30°
29
Hist. Avg.
64°
29°
30
Hist. Avg.
63°
29°
1
Hist. Avg.
63°
29°
2
Hist. Avg.
63°
28°
3
Hist. Avg.
62°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Silverton
Silverton's September 2026 forecast shows daily high temperatures ranging from 57° to 68°, with overnight lows between 24° and 37°. The average high for September is 64° with an average low of 31°. 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 Silverton. See also: October | November | December.