S
M
T
W
T
F
S
30
82°
38°
31
74°
36°
1
73°
41°
2
80°
34°
3
76°
39°
4
79°
39°
5
80°
40°
6
77°
34°
7
78°
34°
8
74°
32°
9
70°
32°
10
68°
33°
11
67°
33°
12
69°
38°
13
72°
35°
14
68°
32°
15
69°
34°
16
68°
32°
17
66°
30°
18
65°
29°
19
65°
30°
20
68°
32°
21
71°
35°
22
71°
31°
23
69°
40°
24
74°
36°
25
64°
31°
26
63°
35°
27
63°
29°
28
61°
28°
29
60°
28°
30
60°
39°
1
62°
40°
2
63°
28°
3
68°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seeley Lake
Seeley Lake's September 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 25° and 41°. The average high for September is 70° with an average low of 34°. 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 Seeley Lake. See also: October | November | December.
