S
M
T
W
T
F
S
30
100°
68°
31
96°
64°
1
96°
72°
2
98°
72°
3
102°
70°
4
102°
68°
5
99°
70°
6
98°
68°
7
96°
69°
8
98°
71°
9
98°
69°
10
94°
69°
11
95°
67°
12
102°
68°
13
97°
75°
14
96°
70°
15
94°
68°
16
87°
64°
17
90°
64°
18
91°
66°
19
94°
68°
20
92°
60°
21
84°
66°
22
81°
62°
23
86°
66°
24
85°
64°
25
78°
61°
26
88°
63°
27
89°
61°
28
87°
59°
29
79°
65°
30
84°
62°
1
75°
56°
2
62°
56°
3
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Silverton
Silverton's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.