S
M
T
W
T
F
S
30
88°
55°
31
82°
55°
1
73°
50°
2
77°
48°
3
77°
50°
4
73°
59°
5
81°
54°
6
81°
52°
7
84°
54°
8
93°
55°
9
99°
63°
10
99°
64°
11
93°
59°
12
88°
57°
13
77°
50°
14
82°
48°
15
84°
52°
16
79°
54°
17
N/A
18
70°
56°
19
75°
60°
20
75°
60°
21
73°
59°
22
82°
49°
23
86°
53°
24
90°
54°
25
86°
53°
26
84°
53°
27
82°
51°
28
79°
48°
29
78°
46°
30
77°
49°
1
78°
44°
2
77°
48°
3
80°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Pine Mountain Lake
Pine Mountain Lake's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 44° and 60°. The average high for September is 80° with an average low of 52°. 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 Pine Mountain Lake. See also: October | November | December.