S
M
T
W
T
F
S
30
86°
67°
31
89°
65°
1
85°
60°
2
86°
70°
3
87°
68°
4
90°
69°
5
86°
71°
6
82°
69°
7
81°
68°
8
82°
61°
9
78°
57°
10
72°
58°
11
74°
57°
12
72°
53°
13
68°
53°
14
69°
52°
15
71°
51°
16
73°
54°
17
74°
57°
18
75°
55°
19
75°
54°
20
74°
55°
21
70°
54°
22
72°
52°
23
73°
55°
24
75°
54°
25
73°
49°
26
62°
43°
27
61°
41°
28
59°
40°
29
70°
42°
30
58°
40°
1
59°
47°
2
58°
45°
3
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Long Lake
Long Lake's September 2026 forecast shows daily high temperatures ranging from 58° to 90°, with overnight lows between 40° and 71°. The average high for September is 72° with an average low of 54°. 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 Long Lake. See also: October | November | December.
