S
M
T
W
T
F
S
30
84°
61°
31
77°
61°
1
68°
60°
2
77°
60°
3
74°
62°
4
82°
63°
5
73°
60°
6
68°
53°
7
81°
53°
8
81°
60°
9
77°
61°
10
84°
68°
11
78°
50°
12
78°
50°
13
71°
57°
14
71°
54°
15
68°
41°
16
78°
49°
17
81°
63°
18
77°
59°
19
64°
48°
20
61°
48°
21
63°
54°
22
60°
49°
23
64°
52°
24
63°
53°
25
62°
55°
26
62°
57°
27
62°
56°
28
64°
56°
29
67°
54°
30
68°
56°
1
70°
55°
2
70°
54°
3
68°
53°
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 62° to 70°, with overnight lows between 52° and 57°. The average high for September is 65° with an average low of 55°. 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.
