S
M
T
W
T
F
S
30
71°
50°
31
71°
52°
1
70°
55°
2
74°
56°
3
79°
50°
4
79°
55°
5
76°
49°
6
69°
47°
7
76°
53°
8
69°
48°
9
68°
51°
10
69°
54°
11
66°
47°
12
67°
50°
13
67°
51°
14
66°
47°
15
65°
43°
16
65°
44°
17
73°
52°
18
73°
45°
19
Hist. Avg.
70°
51°
20
Hist. Avg.
70°
51°
21
Hist. Avg.
70°
51°
22
Hist. Avg.
69°
51°
23
Hist. Avg.
69°
50°
24
Hist. Avg.
68°
50°
25
Hist. Avg.
68°
50°
26
Hist. Avg.
68°
50°
27
Hist. Avg.
67°
49°
28
Hist. Avg.
67°
49°
29
Hist. Avg.
66°
49°
30
Hist. Avg.
66°
49°
1
Hist. Avg.
66°
48°
2
Hist. Avg.
65°
48°
3
Hist. Avg.
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fall City
Fall City's September 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 43° and 56°. The average high for September is 71° with an average low of 50°. 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.
