S
M
T
W
T
F
S
30
90°
74°
31
N/A
1
91°
76°
2
89°
76°
3
89°
78°
4
92°
77°
5
90°
78°
6
88°
79°
7
87°
77°
8
88°
78°
9
89°
77°
10
88°
77°
11
89°
76°
12
88°
77°
13
89°
74°
14
88°
75°
15
89°
76°
16
87°
77°
17
85°
77°
18
86°
76°
19
87°
77°
20
87°
77°
21
86°
76°
22
86°
75°
23
85°
75°
24
85°
74°
25
86°
76°
26
85°
75°
27
84°
76°
28
85°
76°
29
86°
75°
30
85°
76°
1
85°
75°
2
86°
75°
3
85°
74°
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 84° to 92°, with overnight lows between 74° and 79°. The average high for September is 87° with an average low of 76°. 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.
