S
M
T
W
T
F
S
30
71°
49°
31
82°
43°
1
77°
55°
2
68°
49°
3
64°
51°
4
64°
48°
5
73°
44°
6
75°
45°
7
59°
51°
8
67°
50°
9
77°
44°
10
79°
54°
11
71°
48°
12
71°
53°
13
56°
49°
14
62°
47°
15
66°
45°
16
74°
47°
17
76°
48°
18
80°
51°
19
77°
50°
20
76°
49°
21
72°
49°
22
73°
48°
23
71°
48°
24
74°
51°
25
74°
46°
26
61°
50°
27
62°
43°
28
61°
39°
29
60°
43°
30
60°
38°
1
59°
37°
2
61°
38°
3
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coeur d'Alene
Coeur d'Alene's September 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 36° and 53°. The average high for September is 67° with an average low of 46°. 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 Coeur d'Alene. See also: October | November | December.
