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
84°
72°
12
85°
70°
13
88°
71°
14
91°
71°
15
90°
72°
16
87°
68°
17
88°
66°
18
89°
67°
19
83°
62°
20
81°
61°
21
82°
58°
22
81°
60°
23
82°
62°
24
80°
60°
25
84°
64°
26
83°
63°
27
84°
62°
28
84°
63°
29
85°
63°
30
85°
62°
1
84°
63°
2
84°
62°
3
83°
62°
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 80° to 91°, with overnight lows between 58° and 72°. The average high for September is 85° with an average low of 65°. 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.
