S
M
T
W
T
F
S
30
79°
56°
31
76°
53°
1
72°
53°
2
66°
60°
3
66°
61°
4
80°
63°
5
75°
58°
6
74°
53°
7
82°
50°
8
79°
57°
9
67°
51°
10
85°
65°
11
76°
50°
12
70°
43°
13
64°
59°
14
71°
51°
15
67°
44°
16
77°
58°
17
71°
61°
18
77°
44°
19
65°
48°
20
62°
49°
21
64°
45°
22
60°
46°
23
62°
45°
24
63°
48°
25
67°
48°
26
66°
47°
27
69°
48°
28
67°
47°
29
66°
43°
30
60°
45°
1
59°
47°
2
67°
47°
3
59°
47°
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 59° to 77°, with overnight lows between 43° and 61°. The average high for September is 66° with an average low of 48°. 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.
