S
M
T
W
T
F
S
30
89°
75°
31
89°
76°
1
88°
74°
2
89°
75°
3
88°
74°
4
85°
76°
5
85°
76°
6
86°
75°
7
85°
76°
8
85°
76°
9
86°
75°
10
85°
76°
11
85°
76°
12
86°
75°
13
85°
76°
14
85°
76°
15
86°
75°
16
85°
75°
17
85°
76°
18
86°
76°
19
86°
75°
20
85°
76°
21
85°
76°
22
86°
75°
23
84°
76°
24
85°
76°
25
85°
75°
26
86°
76°
27
85°
76°
28
85°
75°
29
86°
76°
30
85°
76°
1
85°
75°
2
86°
76°
3
84°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pearl Harbor Park
Pearl Harbor Park's September 2026 forecast shows daily high temperatures ranging from 84° to 89°, with overnight lows between 74° and 76°. The average high for September is 86° 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 Pearl Harbor Park. See also: October | November | December.