S
M
T
W
T
F
S
30
87°
79°
31
87°
78°
1
88°
79°
2
86°
78°
3
86°
79°
4
87°
79°
5
86°
78°
6
87°
77°
7
88°
77°
8
89°
78°
9
89°
77°
10
88°
77°
11
88°
78°
12
89°
77°
13
89°
77°
14
88°
76°
15
89°
76°
16
88°
75°
17
89°
77°
18
88°
77°
19
89°
76°
20
88°
78°
21
89°
77°
22
88°
76°
23
89°
77°
24
89°
77°
25
88°
76°
26
89°
77°
27
89°
78°
28
88°
77°
29
89°
78°
30
89°
78°
1
90°
77°
2
89°
78°
3
89°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fajardo
Fajardo's September 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 75° and 79°. The average high for September is 88° with an average low of 77°. 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 Fajardo. See also: October | November | December.
