S
M
T
W
T
F
S
30
85°
57°
31
85°
58°
1
86°
57°
2
84°
55°
3
83°
55°
4
81°
53°
5
76°
48°
6
74°
52°
7
77°
51°
8
81°
55°
9
82°
55°
10
77°
46°
11
70°
52°
12
72°
52°
13
79°
53°
14
81°
56°
15
83°
53°
16
79°
46°
17
70°
48°
18
75°
49°
19
78°
52°
20
Hist. Avg.
76°
48°
21
Hist. Avg.
75°
48°
22
Hist. Avg.
75°
47°
23
Hist. Avg.
74°
47°
24
Hist. Avg.
74°
46°
25
Hist. Avg.
73°
46°
26
Hist. Avg.
73°
46°
27
Hist. Avg.
72°
46°
28
Hist. Avg.
72°
45°
29
Hist. Avg.
72°
45°
30
Hist. Avg.
71°
44°
1
Hist. Avg.
71°
44°
2
Hist. Avg.
70°
44°
3
Hist. Avg.
70°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chelan Falls
Chelan Falls's September 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 46° and 58°. The average high for September is 79° with an average low of 53°. 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 Chelan Falls. See also: October | November | December.
