S
M
T
W
T
F
S
30
75°
59°
31
75°
57°
1
76°
55°
2
68°
53°
3
68°
54°
4
69°
52°
5
68°
52°
6
70°
57°
7
72°
56°
8
68°
56°
9
67°
55°
10
70°
56°
11
74°
55°
12
73°
56°
13
74°
56°
14
74°
45°
15
67°
45°
16
64°
46°
17
66°
45°
18
64°
44°
19
63°
46°
20
64°
48°
21
70°
50°
22
71°
51°
23
72°
43°
24
71°
41°
25
65°
42°
26
63°
45°
27
68°
48°
28
68°
49°
29
69°
42°
30
68°
41°
1
62°
40°
2
61°
43°
3
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saco
Saco's September 2026 forecast shows daily high temperatures ranging from 61° to 76°, with overnight lows between 40° and 59°. The average high for September is 69° 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 Saco. See also: October | November | December.
