S
M
T
W
T
F
S
30
92°
62°
31
90°
62°
1
91°
60°
2
91°
61°
3
93°
62°
4
90°
61°
5
89°
61°
6
87°
58°
7
92°
61°
8
93°
62°
9
93°
62°
10
94°
61°
11
93°
61°
12
92°
60°
13
89°
61°
14
84°
56°
15
85°
57°
16
86°
61°
17
92°
62°
18
93°
61°
19
92°
60°
20
91°
60°
21
92°
61°
22
91°
59°
23
88°
56°
24
85°
58°
25
90°
59°
26
90°
59°
27
89°
58°
28
89°
58°
29
86°
56°
30
88°
57°
1
84°
52°
2
79°
49°
3
79°
49°
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 79° to 94°, with overnight lows between 49° and 62°. The average high for September is 89° 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 Clarksburg. See also: October | November | December.
