S
M
T
W
T
F
S
30
83°
55°
31
81°
63°
1
89°
67°
2
88°
66°
3
89°
68°
4
83°
62°
5
78°
54°
6
75°
59°
7
77°
57°
8
72°
56°
9
73°
57°
10
76°
55°
11
75°
55°
12
72°
53°
13
73°
55°
14
74°
54°
15
73°
58°
16
71°
58°
17
71°
52°
18
69°
48°
19
68°
50°
20
71°
54°
21
76°
56°
22
76°
57°
23
77°
57°
24
77°
55°
25
75°
53°
26
73°
54°
27
74°
55°
28
74°
55°
29
75°
54°
30
69°
49°
1
66°
46°
2
67°
51°
3
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Martinsburg
Martinsburg's September 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 46° and 68°. The average high for September is 75° 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 Martinsburg. See also: October | November | December.
