S
M
T
W
T
F
S
30
79°
55°
31
79°
64°
1
83°
65°
2
73°
67°
3
84°
67°
4
84°
63°
5
81°
57°
6
75°
60°
7
78°
60°
8
77°
56°
9
75°
59°
10
78°
57°
11
78°
59°
12
77°
58°
13
78°
56°
14
76°
55°
15
73°
54°
16
72°
59°
17
75°
51°
18
71°
50°
19
70°
49°
20
71°
52°
21
75°
57°
22
78°
58°
23
79°
57°
24
78°
54°
25
76°
52°
26
76°
54°
27
77°
55°
28
76°
54°
29
75°
51°
30
69°
47°
1
65°
45°
2
68°
50°
3
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mountain Lakes
Mountain Lakes's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 45° and 67°. The average high for September is 76° with an average low of 56°. 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 Mountain Lakes. See also: October | November | December.
