S
M
T
W
T
F
S
30
89°
73°
31
90°
75°
1
90°
77°
2
89°
75°
3
91°
78°
4
92°
76°
5
92°
76°
6
93°
74°
7
90°
77°
8
87°
75°
9
93°
76°
10
92°
76°
11
92°
75°
12
92°
77°
13
91°
73°
14
92°
74°
15
80°
79°
16
86°
78°
17
88°
76°
18
88°
76°
19
90°
73°
20
87°
72°
21
86°
71°
22
87°
74°
23
89°
76°
24
87°
76°
25
83°
72°
26
82°
68°
27
85°
65°
28
87°
64°
29
86°
69°
30
87°
72°
1
87°
74°
2
88°
75°
3
92°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Placid
Lake Placid's September 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 69° and 75°. The average high for September is 88° with an average low of 73°. 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 Lake Placid. See also: October | November | December.