S
M
T
W
T
F
S
30
90°
77°
31
88°
75°
1
88°
76°
2
88°
77°
3
90°
79°
4
88°
75°
5
90°
78°
6
90°
78°
7
88°
77°
8
90°
75°
9
90°
78°
10
90°
79°
11
90°
79°
12
90°
75°
13
88°
79°
14
88°
77°
15
88°
77°
16
88°
77°
17
90°
75°
18
88°
77°
19
91°
77°
20
89°
76°
21
89°
77°
22
89°
77°
23
89°
76°
24
90°
75°
25
89°
74°
26
90°
73°
27
89°
74°
28
89°
76°
29
89°
76°
30
89°
75°
1
90°
73°
2
88°
74°
3
89°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Aguadilla
Aguadilla's September 2026 forecast shows daily high temperatures ranging from 88° to 91°, with overnight lows between 73° and 77°. The average high for September is 89° with an average low of 75°. 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 Aguadilla. See also: October | November | December.