S
M
T
W
T
F
S
30
84°
65°
31
84°
58°
1
80°
61°
2
83°
64°
3
84°
63°
4
83°
62°
5
77°
59°
6
74°
58°
7
79°
57°
8
77°
55°
9
78°
57°
10
79°
59°
11
77°
57°
12
77°
56°
13
75°
56°
14
71°
54°
15
66°
51°
16
65°
54°
17
74°
52°
18
73°
55°
19
75°
55°
20
75°
54°
21
74°
54°
22
75°
50°
23
65°
46°
24
62°
47°
25
68°
51°
26
64°
52°
27
72°
52°
28
72°
51°
29
70°
52°
30
69°
51°
1
70°
49°
2
65°
49°
3
64°
48°
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 62° to 84°, with overnight lows between 46° and 65°. The average high for September is 74° with an average low of 55°. 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.
