S
M
T
W
T
F
S
30
76°
48°
31
78°
41°
1
68°
45°
2
70°
50°
3
68°
51°
4
76°
43°
5
69°
41°
6
66°
44°
7
71°
49°
8
73°
46°
9
70°
41°
10
64°
46°
11
64°
42°
12
62°
40°
13
61°
39°
14
62°
39°
15
62°
47°
16
64°
47°
17
66°
40°
18
67°
43°
19
59°
44°
20
61°
45°
21
60°
40°
22
59°
41°
23
59°
35°
24
58°
43°
25
59°
40°
26
58°
40°
27
57°
35°
28
Hist. Avg.
61°
40°
29
Hist. Avg.
60°
39°
30
Hist. Avg.
60°
39°
1
Hist. Avg.
59°
39°
2
Hist. Avg.
59°
38°
3
Hist. Avg.
58°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kettle Falls
Kettle Falls's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 35° and 51°. The average high for September is 65° with an average low of 43°. 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 Kettle Falls. See also: October | November | December.
