S
M
T
W
T
F
S
30
85°
60°
31
86°
67°
1
92°
72°
2
95°
72°
3
95°
69°
4
88°
68°
5
82°
61°
6
79°
61°
7
79°
60°
8
75°
59°
9
79°
61°
10
82°
60°
11
78°
56°
12
76°
56°
13
74°
57°
14
76°
55°
15
80°
60°
16
77°
59°
17
77°
56°
18
73°
52°
19
76°
58°
20
80°
60°
21
80°
59°
22
79°
59°
23
80°
58°
24
80°
58°
25
79°
57°
26
79°
56°
27
78°
57°
28
78°
57°
29
77°
56°
30
76°
54°
1
75°
53°
2
76°
54°
3
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Martinsville
New Martinsville's September 2026 forecast shows daily high temperatures ranging from 73° to 95°, with overnight lows between 52° and 72°. The average high for September is 80° with an average low of 59°. 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 New Martinsville. See also: October | November | December.