S
M
T
W
T
F
S
30
95°
72°
31
95°
73°
1
96°
72°
2
99°
74°
3
97°
75°
4
95°
74°
5
90°
76°
6
97°
73°
7
89°
72°
8
90°
72°
9
93°
70°
10
92°
72°
11
82°
73°
12
84°
70°
13
92°
69°
14
96°
71°
15
94°
72°
16
90°
65°
17
88°
63°
18
89°
67°
19
83°
62°
20
81°
61°
21
82°
62°
22
79°
60°
23
83°
58°
24
82°
57°
25
81°
60°
26
83°
63°
27
84°
62°
28
84°
64°
29
83°
63°
30
84°
63°
1
83°
62°
2
83°
62°
3
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rocky Brook
Rocky Brook's September 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 57° and 72°. The average high for September is 85° with an average low of 64°. 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 Rocky Brook. See also: October | November | December.
