S
M
T
W
T
F
S
30
83°
64°
31
85°
64°
1
86°
62°
2
80°
57°
3
78°
56°
4
78°
56°
5
79°
55°
6
83°
61°
7
85°
63°
8
85°
62°
9
84°
63°
10
86°
63°
11
85°
62°
12
85°
63°
13
86°
64°
14
86°
59°
15
75°
56°
16
74°
56°
17
76°
54°
18
73°
53°
19
74°
49°
20
73°
50°
21
81°
52°
22
82°
53°
23
82°
49°
24
79°
48°
25
72°
48°
26
75°
54°
27
78°
56°
28
79°
54°
29
72°
46°
30
69°
46°
1
70°
49°
2
76°
48°
3
77°
52°
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 69° to 86°, with overnight lows between 46° and 64°. The average high for September is 79° 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 Clarksburg. See also: October | November | December.
