S
M
T
W
T
F
S
30
84°
66°
31
86°
71°
1
86°
64°
2
87°
64°
3
83°
70°
4
91°
74°
5
78°
69°
6
76°
67°
7
78°
65°
8
79°
60°
9
78°
53°
10
79°
60°
11
80°
57°
12
74°
54°
13
66°
52°
14
69°
47°
15
67°
50°
16
72°
50°
17
73°
51°
18
72°
50°
19
66°
48°
20
70°
45°
21
68°
49°
22
72°
50°
23
73°
51°
24
73°
51°
25
71°
50°
26
70°
50°
27
73°
49°
28
72°
50°
29
69°
50°
30
70°
47°
1
61°
42°
2
58°
37°
3
57°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pine Island
Pine Island's September 2026 forecast shows daily high temperatures ranging from 57° to 80°, with overnight lows between 35° and 65°. The average high for September is 71° with an average low of 50°. 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 Pine Island. See also: October | November | December.