S
M
T
W
T
F
S
30
74°
55°
31
74°
57°
1
80°
58°
2
80°
56°
3
79°
50°
4
79°
56°
5
78°
51°
6
78°
50°
7
71°
53°
8
70°
55°
9
71°
50°
10
77°
47°
11
71°
54°
12
72°
49°
13
77°
49°
14
72°
47°
15
69°
53°
16
69°
46°
17
75°
45°
18
70°
47°
19
Hist. Avg.
71°
51°
20
Hist. Avg.
70°
50°
21
Hist. Avg.
70°
50°
22
Hist. Avg.
69°
49°
23
Hist. Avg.
69°
49°
24
Hist. Avg.
68°
49°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
48°
27
Hist. Avg.
67°
47°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
66°
47°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
65°
45°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rockingham
Rockingham's September 2026 forecast shows daily high temperatures ranging from 69° to 80°, with overnight lows between 45° and 58°. The average high for September is 74° with an average low of 51°. 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 Rockingham. See also: October | November | December.