S
M
T
W
T
F
S
30
85°
64°
31
84°
57°
1
80°
57°
2
79°
58°
3
80°
58°
4
81°
59°
5
81°
57°
6
77°
57°
7
77°
56°
8
78°
60°
9
78°
56°
10
77°
55°
11
77°
56°
12
78°
55°
13
77°
56°
14
76°
55°
15
77°
56°
16
76°
53°
17
77°
52°
18
75°
53°
19
78°
52°
20
Hist. Avg.
78°
54°
21
Hist. Avg.
78°
54°
22
Hist. Avg.
77°
53°
23
Hist. Avg.
77°
53°
24
Hist. Avg.
77°
52°
25
Hist. Avg.
76°
52°
26
Hist. Avg.
76°
51°
27
Hist. Avg.
76°
50°
28
Hist. Avg.
75°
50°
29
Hist. Avg.
75°
49°
30
Hist. Avg.
75°
49°
1
Hist. Avg.
74°
48°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
74°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mount Holly
Mount Holly's September 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 52° and 64°. The average high for September is 78° with an average low of 56°. 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 Mount Holly. See also: October | November | December.