S
M
T
W
T
F
S
30
58°
43°
31
65°
52°
1
74°
50°
2
62°
55°
3
61°
51°
4
61°
47°
5
68°
48°
6
73°
43°
7
73°
37°
8
74°
39°
9
72°
46°
10
65°
42°
11
69°
35°
12
72°
33°
13
74°
30°
14
66°
35°
15
68°
39°
16
72°
33°
17
76°
32°
18
76°
33°
19
73°
34°
20
77°
42°
21
79°
44°
22
73°
40°
23
67°
44°
24
61°
48°
25
57°
39°
26
59°
42°
27
63°
40°
28
64°
42°
29
60°
43°
30
62°
42°
1
66°
43°
2
60°
40°
3
54°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clearwater
Clearwater's September 2026 forecast shows daily high temperatures ranging from 54° to 79°, with overnight lows between 39° and 48°. The average high for September is 64° with an average low of 42°. 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 Clearwater. See also: October | November | December.
