S
M
T
W
T
F
S
30
72°
42°
31
82°
36°
1
83°
50°
2
70°
47°
3
68°
43°
4
70°
43°
5
75°
44°
6
78°
46°
7
72°
44°
8
76°
45°
9
77°
44°
10
78°
42°
11
82°
47°
12
79°
45°
13
78°
44°
14
77°
40°
15
82°
45°
16
81°
41°
17
69°
37°
18
69°
38°
19
74°
43°
20
70°
39°
21
67°
34°
22
67°
34°
23
72°
39°
24
67°
39°
25
69°
37°
26
74°
38°
27
76°
42°
28
74°
41°
29
65°
36°
30
74°
39°
1
73°
40°
2
66°
40°
3
62°
39°
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 62° to 83°, with overnight lows between 34° and 50°. The average high for September is 73° with an average low of 41°. 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.
