S
M
T
W
T
F
S
30
79°
56°
31
81°
48°
1
74°
47°
2
71°
52°
3
72°
56°
4
78°
49°
5
81°
45°
6
73°
46°
7
71°
48°
8
71°
53°
9
70°
52°
10
70°
52°
11
71°
47°
12
69°
45°
13
68°
42°
14
67°
44°
15
68°
50°
16
66°
53°
17
73°
52°
18
76°
52°
19
76°
49°
20
72°
46°
21
73°
45°
22
68°
41°
23
64°
40°
24
63°
39°
25
64°
40°
26
67°
43°
27
Hist. Avg.
67°
45°
28
Hist. Avg.
66°
45°
29
Hist. Avg.
66°
44°
30
Hist. Avg.
66°
44°
1
Hist. Avg.
65°
44°
2
Hist. Avg.
65°
43°
3
Hist. Avg.
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Pine Island
Pine Island's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 39° and 56°. The average high for September is 71° with an average low of 48°. 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.