S
M
T
W
T
F
S
30
85°
63°
31
86°
63°
1
87°
64°
2
88°
62°
3
86°
63°
4
86°
61°
5
85°
63°
6
87°
63°
7
88°
62°
8
94°
66°
9
92°
65°
10
90°
65°
11
92°
66°
12
94°
67°
13
92°
65°
14
94°
66°
15
95°
60°
16
93°
61°
17
94°
60°
18
95°
64°
19
94°
64°
20
95°
65°
21
87°
68°
22
87°
68°
23
88°
68°
24
87°
68°
25
87°
68°
26
86°
68°
27
87°
68°
28
88°
68°
29
88°
67°
30
87°
69°
1
88°
69°
2
87°
68°
3
85°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sinaloa
Sinaloa's September 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 60° and 69°. The average high for September is 90° with an average low of 66°. 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 Sinaloa. See also: October | November | December.
