S
M
T
W
T
F
S
30
93°
80°
31
94°
79°
1
94°
77°
2
93°
82°
3
94°
83°
4
96°
82°
5
94°
80°
6
94°
79°
7
94°
78°
8
95°
79°
9
95°
81°
10
93°
74°
11
92°
83°
12
93°
83°
13
93°
83°
14
92°
82°
15
92°
82°
16
92°
81°
17
93°
77°
18
95°
76°
19
95°
77°
20
96°
75°
21
89°
73°
22
90°
73°
23
91°
75°
24
89°
73°
25
89°
72°
26
90°
75°
27
86°
76°
28
86°
76°
29
87°
76°
30
88°
75°
1
88°
75°
2
86°
74°
3
86°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rockport
Rockport's September 2026 forecast shows daily high temperatures ranging from 86° to 96°, with overnight lows between 72° and 83°. The average high for September is 90° 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 Rockport. See also: October | November | December.