S
M
T
W
T
F
S
30
75°
48°
31
71°
50°
1
68°
47°
2
67°
50°
3
69°
48°
4
76°
47°
5
75°
54°
6
69°
49°
7
66°
46°
8
65°
45°
9
66°
46°
10
65°
45°
11
66°
48°
12
72°
50°
13
74°
50°
14
74°
52°
15
73°
52°
16
72°
53°
17
74°
53°
18
66°
50°
19
71°
53°
20
73°
54°
21
74°
53°
22
73°
52°
23
63°
52°
24
62°
44°
25
62°
43°
26
61°
51°
27
60°
43°
28
61°
42°
29
60°
43°
30
61°
45°
1
62°
49°
2
68°
50°
3
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lilliwaup
Lilliwaup's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 42° and 54°. The average high for September is 68° with an average low of 49°. 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 Lilliwaup. See also: October | November | December.
