S
M
T
W
T
F
S
30
89°
60°
31
83°
62°
1
88°
56°
2
80°
55°
3
80°
61°
4
87°
63°
5
87°
62°
6
88°
59°
7
87°
60°
8
83°
61°
9
82°
56°
10
81°
53°
11
77°
55°
12
80°
57°
13
77°
60°
14
82°
60°
15
83°
59°
16
83°
56°
17
79°
49°
18
76°
47°
19
73°
48°
20
73°
49°
21
74°
55°
22
79°
59°
23
81°
58°
24
80°
54°
25
81°
46°
26
77°
47°
27
69°
46°
28
70°
44°
29
70°
46°
30
70°
45°
1
Hist. Avg.
74°
49°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Falls City
Falls City's September 2026 forecast shows daily high temperatures ranging from 69° to 89°, with overnight lows between 44° and 63°. The average high for September is 80° with an average low of 55°. 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 Falls City. See also: October | November | December.
