S
M
T
W
T
F
S
30
90°
67°
31
85°
61°
1
81°
52°
2
86°
60°
3
93°
69°
4
89°
61°
5
90°
72°
6
84°
65°
7
76°
68°
8
84°
55°
9
75°
53°
10
85°
62°
11
88°
53°
12
72°
54°
13
67°
53°
14
65°
49°
15
68°
52°
16
72°
52°
17
72°
50°
18
69°
49°
19
68°
49°
20
71°
48°
21
74°
55°
22
76°
56°
23
76°
54°
24
74°
53°
25
71°
53°
26
71°
54°
27
73°
54°
28
74°
52°
29
69°
50°
30
60°
49°
1
59°
47°
2
58°
41°
3
57°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clark
Clark's September 2026 forecast shows daily high temperatures ranging from 57° to 88°, with overnight lows between 41° and 68°. The average high for September is 71° with an average low of 52°. 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 Clark. See also: October | November | December.
