S
M
T
W
T
F
S
30
79°
60°
31
82°
63°
1
84°
63°
2
84°
62°
3
85°
56°
4
83°
54°
5
77°
55°
6
77°
61°
7
78°
60°
8
81°
60°
9
82°
59°
10
78°
60°
11
81°
59°
12
82°
59°
13
81°
60°
14
79°
60°
15
82°
59°
16
82°
55°
17
79°
58°
18
77°
52°
19
78°
50°
20
72°
49°
21
71°
47°
22
70°
54°
23
70°
51°
24
75°
47°
25
69°
46°
26
68°
46°
27
70°
48°
28
74°
52°
29
73°
50°
30
74°
49°
1
68°
51°
2
68°
44°
3
67°
50°
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 67° to 85°, with overnight lows between 44° and 63°. The average high for September is 77° with an average low of 55°. 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.
