S
M
T
W
T
F
S
30
57°
50°
31
55°
50°
1
64°
45°
2
67°
41°
3
71°
38°
4
70°
38°
5
67°
38°
6
61°
52°
7
64°
51°
8
56°
54°
9
58°
47°
10
64°
44°
11
66°
40°
12
66°
45°
13
65°
42°
14
64°
49°
15
58°
51°
16
59°
50°
17
61°
50°
18
60°
47°
19
61°
48°
20
60°
47°
21
57°
48°
22
55°
46°
23
56°
47°
24
48°
37°
25
50°
39°
26
51°
40°
27
49°
39°
28
48°
38°
29
49°
38°
30
48°
39°
1
48°
37°
2
49°
36°
3
47°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tee Harbor
Tee Harbor's September 2026 forecast shows daily high temperatures ranging from 47° to 66°, with overnight lows between 36° and 51°. The average high for September is 55° with an average low of 43°. 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 Tee Harbor. See also: October | November | December.
