S
M
T
W
T
F
S
30
75°
49°
31
75°
46°
1
76°
49°
2
77°
50°
3
77°
50°
4
76°
47°
5
75°
48°
6
74°
47°
7
72°
47°
8
69°
42°
9
70°
41°
10
69°
42°
11
71°
43°
12
74°
42°
13
75°
45°
14
75°
47°
15
74°
46°
16
72°
41°
17
70°
41°
18
70°
40°
19
67°
39°
20
72°
38°
21
71°
45°
22
72°
44°
23
69°
45°
24
64°
46°
25
63°
44°
26
62°
37°
27
62°
39°
28
64°
40°
29
64°
41°
30
70°
44°
1
70°
44°
2
Hist. Avg.
84°
56°
3
Hist. Avg.
83°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stoneman Lake
Stoneman Lake's September 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 37° and 50°. The average high for September is 71° with an average low of 44°. 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 Stoneman Lake. See also: October | November | December.