S
M
T
W
T
F
S
30
85°
61°
31
79°
62°
1
83°
62°
2
82°
61°
3
83°
61°
4
83°
60°
5
82°
60°
6
82°
58°
7
81°
60°
8
81°
60°
9
80°
59°
10
80°
59°
11
79°
57°
12
81°
58°
13
82°
58°
14
81°
57°
15
81°
59°
16
79°
58°
17
80°
59°
18
80°
56°
19
75°
49°
20
74°
56°
21
73°
58°
22
75°
49°
23
72°
48°
24
70°
48°
25
71°
53°
26
74°
54°
27
69°
49°
28
69°
48°
29
68°
47°
30
69°
52°
1
69°
54°
2
71°
45°
3
69°
43°
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 68° to 85°, with overnight lows between 43° and 62°. The average high for September is 77° 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 Martinsburg. See also: October | November | December.
