S
M
T
W
T
F
S
30
84°
63°
31
91°
67°
1
92°
67°
2
88°
65°
3
87°
66°
4
89°
72°
5
83°
62°
6
83°
59°
7
82°
58°
8
79°
62°
9
84°
55°
10
79°
48°
11
83°
46°
12
78°
48°
13
71°
42°
14
66°
36°
15
75°
51°
16
75°
45°
17
70°
57°
18
64°
56°
19
64°
58°
20
71°
55°
21
65°
51°
22
67°
42°
23
71°
38°
24
72°
40°
25
74°
57°
26
73°
43°
27
67°
58°
28
73°
55°
29
77°
46°
30
72°
64°
1
69°
36°
2
64°
34°
3
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rockland
Rockland's September 2026 forecast shows daily high temperatures ranging from 64° to 69°, with overnight lows between 34° and 45°. The average high for September is 67° with an average low of 38°. 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 Rockland. See also: October | November | December.
