S
M
T
W
T
F
S
30
81°
49°
31
72°
48°
1
71°
50°
2
72°
55°
3
71°
49°
4
72°
56°
5
78°
55°
6
78°
48°
7
73°
48°
8
70°
47°
9
69°
46°
10
69°
53°
11
73°
46°
12
69°
46°
13
67°
45°
14
68°
52°
15
73°
52°
16
74°
44°
17
74°
43°
18
65°
42°
19
64°
44°
20
64°
46°
21
65°
45°
22
62°
43°
23
62°
49°
24
64°
48°
25
65°
49°
26
69°
49°
27
69°
43°
28
68°
40°
29
61°
41°
30
62°
48°
1
61°
49°
2
65°
45°
3
67°
41°
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 61° to 81°, with overnight lows between 40° and 56°. The average high for September is 69° with an average low of 47°. 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.
