S
M
T
W
T
F
S
30
85°
70°
31
87°
73°
1
91°
75°
2
96°
75°
3
88°
67°
4
81°
64°
5
81°
63°
6
80°
61°
7
84°
64°
8
81°
63°
9
77°
58°
10
76°
59°
11
77°
56°
12
80°
60°
13
80°
59°
14
79°
60°
15
80°
60°
16
79°
59°
17
79°
59°
18
75°
58°
19
79°
60°
20
80°
60°
21
80°
59°
22
79°
59°
23
79°
58°
24
78°
58°
25
78°
57°
26
77°
56°
27
78°
57°
28
77°
56°
29
76°
55°
30
74°
54°
1
74°
54°
2
75°
55°
3
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Harbor View
Harbor View's September 2026 forecast shows daily high temperatures ranging from 74° to 96°, with overnight lows between 54° and 75°. The average high for September is 80° with an average low of 60°. 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 Harbor View. See also: October | November | December.