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°
53°
12
71°
50°
13
53°
48°
14
63°
47°
15
68°
45°
16
74°
49°
17
76°
48°
18
78°
51°
19
77°
50°
20
74°
50°
21
72°
50°
22
73°
48°
23
71°
48°
24
79°
51°
25
63°
48°
26
61°
50°
27
62°
43°
28
60°
40°
29
60°
38°
30
59°
38°
1
60°
46°
2
65°
47°
3
64°
44°
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 53° to 79°, with overnight lows between 38° and 53°. The average high for September is 68° with an average low of 47°. 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.
