S
M
T
W
T
F
S
30
71°
49°
31
82°
43°
1
77°
55°
2
68°
49°
3
67°
50°
4
63°
46°
5
68°
49°
6
73°
53°
7
65°
50°
8
74°
49°
9
79°
52°
10
81°
54°
11
73°
51°
12
74°
50°
13
72°
48°
14
75°
49°
15
75°
49°
16
76°
50°
17
66°
45°
18
66°
47°
19
65°
43°
20
65°
52°
21
66°
48°
22
68°
51°
23
66°
41°
24
62°
40°
25
62°
39°
26
63°
43°
27
70°
45°
28
72°
47°
29
73°
48°
30
71°
47°
1
72°
48°
2
72°
48°
3
71°
47°
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 62° to 81°, with overnight lows between 39° and 54°. The average high for September is 70° with an average low of 48°. 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.
