S
M
T
W
T
F
S
30
86°
62°
31
85°
67°
1
87°
67°
2
90°
69°
3
89°
69°
4
89°
67°
5
80°
66°
6
79°
61°
7
80°
55°
8
83°
58°
9
85°
61°
10
78°
69°
11
79°
66°
12
86°
65°
13
83°
68°
14
73°
53°
15
83°
50°
16
90°
59°
17
86°
69°
18
80°
62°
19
83°
61°
20
76°
68°
21
74°
62°
22
68°
57°
23
66°
54°
24
68°
43°
25
69°
45°
26
71°
44°
27
70°
50°
28
72°
53°
29
75°
56°
30
74°
55°
1
76°
52°
2
69°
49°
3
70°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clarksburg
Clarksburg's September 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 43° and 57°. The average high for September is 71° 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 Clarksburg. See also: October | November | December.
