S
M
T
W
T
F
S
30
76°
51°
31
N/A
1
69°
55°
2
67°
57°
3
65°
61°
4
76°
57°
5
70°
55°
6
71°
54°
7
73°
57°
8
72°
55°
9
72°
58°
10
74°
58°
11
72°
55°
12
67°
54°
13
69°
57°
14
72°
57°
15
66°
56°
16
67°
57°
17
70°
56°
18
64°
53°
19
63°
50°
20
63°
55°
21
68°
55°
22
70°
54°
23
70°
55°
24
69°
54°
25
69°
53°
26
70°
54°
27
69°
53°
28
68°
52°
29
67°
49°
30
59°
47°
1
58°
44°
2
58°
51°
3
65°
51°
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 58° to 76°, with overnight lows between 44° and 61°. The average high for September is 68° with an average low of 54°. 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.
