S
M
T
W
T
F
S
30
72°
55°
31
73°
57°
1
73°
48°
2
68°
59°
3
73°
65°
4
71°
51°
5
71°
53°
6
76°
61°
7
73°
56°
8
68°
50°
9
69°
53°
10
64°
55°
11
66°
54°
12
67°
52°
13
66°
55°
14
67°
55°
15
68°
56°
16
62°
47°
17
63°
50°
18
63°
49°
19
64°
52°
20
66°
53°
21
66°
53°
22
65°
52°
23
66°
52°
24
63°
51°
25
66°
53°
26
65°
52°
27
65°
49°
28
64°
50°
29
64°
52°
30
65°
51°
1
59°
46°
2
58°
46°
3
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Waterlooville
Waterlooville's September 2026 forecast shows daily high temperatures ranging from 58° to 76°, with overnight lows between 45° and 65°. The average high for September is 66° with an average low of 52°. 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 Waterlooville. See also: October | November | December.
