S
M
T
W
T
F
S
30
88°
80°
31
94°
79°
1
91°
75°
2
90°
79°
3
90°
80°
4
91°
78°
5
90°
79°
6
90°
78°
7
88°
78°
8
90°
79°
9
90°
79°
10
91°
80°
11
91°
78°
12
91°
78°
13
90°
78°
14
88°
77°
15
89°
77°
16
87°
78°
17
88°
77°
18
89°
76°
19
88°
75°
20
89°
76°
21
88°
74°
22
88°
74°
23
89°
75°
24
86°
75°
25
87°
75°
26
86°
74°
27
86°
72°
28
87°
74°
29
87°
74°
30
84°
73°
1
86°
74°
2
87°
75°
3
86°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Juncos
Juncos's September 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 72° and 78°. The average high for September is 88° 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 Juncos. See also: October | November | December.