S
M
T
W
T
F
S
30
86°
61°
31
83°
69°
1
94°
71°
2
89°
71°
3
91°
70°
4
91°
68°
5
80°
64°
6
81°
59°
7
80°
56°
8
85°
55°
9
90°
60°
10
86°
71°
11
80°
64°
12
78°
64°
13
87°
69°
14
77°
54°
15
77°
47°
16
88°
55°
17
85°
65°
18
82°
69°
19
77°
62°
20
80°
69°
21
70°
60°
22
59°
53°
23
63°
48°
24
65°
46°
25
71°
49°
26
72°
50°
27
73°
52°
28
73°
52°
29
75°
53°
30
73°
54°
1
75°
54°
2
70°
49°
3
69°
54°
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 59° to 75°, with overnight lows between 46° and 54°. The average high for September is 70° 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 Martinsburg. See also: October | November | December.
