S
M
T
W
T
F
S
30
82°
69°
31
78°
71°
1
80°
68°
2
74°
67°
3
88°
69°
4
86°
75°
5
80°
70°
6
77°
66°
7
79°
66°
8
80°
67°
9
84°
71°
10
87°
72°
11
80°
70°
12
79°
66°
13
82°
69°
14
78°
64°
15
73°
60°
16
79°
65°
17
85°
73°
18
81°
62°
19
70°
63°
20
72°
60°
21
68°
58°
22
62°
55°
23
65°
56°
24
64°
56°
25
67°
59°
26
69°
60°
27
70°
59°
28
71°
61°
29
72°
60°
30
74°
61°
1
72°
54°
2
75°
64°
3
68°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in La Guardia Airport
La Guardia Airport's September 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 54° and 64°. The average high for September is 70° with an average low of 59°. 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 La Guardia Airport. See also: October | November | December.
