S
M
T
W
T
F
S
30
68°
56°
31
71°
54°
1
70°
54°
2
70°
55°
3
66°
52°
4
68°
52°
5
68°
54°
6
68°
52°
7
69°
53°
8
69°
54°
9
74°
55°
10
70°
53°
11
68°
54°
12
67°
53°
13
69°
53°
14
69°
54°
15
68°
55°
16
69°
54°
17
64°
55°
18
63°
51°
19
63°
50°
20
64°
56°
21
63°
55°
22
63°
53°
23
62°
49°
24
61°
47°
25
61°
46°
26
63°
49°
27
69°
53°
28
70°
54°
29
70°
54°
30
69°
53°
1
68°
54°
2
69°
54°
3
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shoreline
Shoreline's September 2026 forecast shows daily high temperatures ranging from 61° to 74°, with overnight lows between 46° and 56°. The average high for September is 67° with an average low of 53°. 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 Shoreline. See also: October | November | December.
