S
M
T
W
T
F
S
30
71°
55°
31
76°
54°
1
66°
57°
2
70°
55°
3
68°
53°
4
70°
53°
5
70°
52°
6
74°
53°
7
70°
57°
8
75°
52°
9
79°
56°
10
69°
54°
11
68°
51°
12
67°
50°
13
69°
46°
14
72°
48°
15
75°
49°
16
72°
50°
17
74°
50°
18
75°
49°
19
72°
50°
20
72°
50°
21
67°
48°
22
64°
49°
23
63°
45°
24
67°
48°
25
69°
51°
26
63°
50°
27
62°
48°
28
61°
45°
29
60°
41°
30
60°
43°
1
65°
48°
2
69°
50°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fall City
Fall City's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 41° and 56°. The average high for September is 68° with an average low of 49°. 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 Fall City. See also: October | November | December.
