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
72°
52°
13
60°
49°
14
64°
47°
15
66°
45°
16
74°
47°
17
78°
48°
18
78°
51°
19
80°
51°
20
76°
52°
21
75°
51°
22
72°
51°
23
72°
48°
24
68°
49°
25
71°
48°
26
79°
53°
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 58° to 80°, with overnight lows between 36° and 53°. The average high for September is 68° 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.
