S
M
T
W
T
F
S
30
91°
69°
31
90°
70°
1
90°
68°
2
89°
68°
3
89°
69°
4
88°
65°
5
89°
68°
6
90°
69°
7
89°
68°
8
88°
67°
9
88°
68°
10
89°
68°
11
88°
67°
12
87°
66°
13
84°
67°
14
86°
67°
15
84°
66°
16
84°
66°
17
83°
65°
18
83°
63°
19
84°
65°
20
83°
60°
21
81°
59°
22
82°
61°
23
83°
64°
24
84°
63°
25
85°
64°
26
84°
63°
27
85°
64°
28
81°
62°
29
81°
59°
30
83°
60°
1
Hist. Avg.
83°
62°
2
Hist. Avg.
83°
61°
3
Hist. Avg.
82°
61°
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 81° to 91°, with overnight lows between 59° and 70°. The average high for September is 86° with an average low of 65°. 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.
