S
M
T
W
T
F
S
30
74°
58°
31
75°
57°
1
81°
58°
2
79°
58°
3
76°
57°
4
75°
54°
5
72°
53°
6
74°
52°
7
75°
49°
8
72°
47°
9
74°
47°
10
76°
46°
11
72°
45°
12
73°
51°
13
73°
56°
14
79°
57°
15
82°
50°
16
76°
52°
17
78°
58°
18
78°
56°
19
73°
55°
20
77°
56°
21
78°
51°
22
70°
49°
23
67°
47°
24
68°
50°
25
70°
46°
26
72°
47°
27
72°
45°
28
67°
48°
29
69°
49°
30
71°
51°
1
69°
49°
2
74°
50°
3
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Silver Falls State Park
Silver Falls State Park's September 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 45° and 58°. The average high for September is 74° with an average low of 52°. 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 Silver Falls State Park. See also: October | November | December.