S
M
T
W
T
F
S
30
76°
39°
31
78°
43°
1
84°
47°
2
86°
50°
3
87°
46°
4
84°
39°
5
74°
38°
6
75°
45°
7
82°
43°
8
84°
41°
9
79°
43°
10
78°
37°
11
76°
37°
12
76°
41°
13
75°
36°
14
72°
34°
15
70°
34°
16
70°
32°
17
71°
33°
18
71°
34°
19
72°
36°
20
79°
37°
21
79°
35°
22
73°
36°
23
69°
33°
24
66°
32°
25
64°
30°
26
66°
31°
27
66°
32°
28
67°
38°
29
73°
37°
30
65°
29°
1
63°
32°
2
Hist. Avg.
66°
33°
3
Hist. Avg.
65°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chewelah
Chewelah's September 2026 forecast shows daily high temperatures ranging from 63° to 87°, with overnight lows between 29° and 50°. The average high for September is 74° with an average low of 37°. 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 Chewelah. See also: October | November | December.
