S
M
T
W
T
F
S
30
79°
41°
31
80°
46°
1
81°
52°
2
87°
53°
3
89°
51°
4
88°
51°
5
84°
49°
6
78°
48°
7
81°
47°
8
81°
42°
9
76°
48°
10
77°
47°
11
74°
41°
12
74°
41°
13
73°
40°
14
74°
41°
15
76°
43°
16
81°
45°
17
83°
42°
18
82°
49°
19
83°
47°
20
83°
50°
21
82°
47°
22
81°
49°
23
82°
50°
24
81°
46°
25
81°
48°
26
78°
43°
27
68°
44°
28
70°
45°
29
69°
43°
30
66°
46°
1
68°
48°
2
75°
46°
3
67°
41°
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 66° to 89°, with overnight lows between 40° and 53°. The average high for September is 78° with an average low of 46°. 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.
