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