S
M
T
W
T
F
S
30
74°
48°
31
73°
44°
1
67°
46°
2
67°
45°
3
66°
44°
4
66°
44°
5
67°
45°
6
66°
45°
7
70°
50°
8
71°
51°
9
66°
44°
10
67°
47°
11
69°
50°
12
70°
49°
13
68°
48°
14
71°
47°
15
67°
42°
16
64°
41°
17
62°
42°
18
66°
48°
19
70°
48°
20
Hist. Avg.
65°
42°
21
Hist. Avg.
65°
42°
22
Hist. Avg.
64°
42°
23
Hist. Avg.
64°
41°
24
Hist. Avg.
64°
41°
25
Hist. Avg.
63°
41°
26
Hist. Avg.
63°
41°
27
Hist. Avg.
63°
40°
28
Hist. Avg.
62°
40°
29
Hist. Avg.
62°
40°
30
Hist. Avg.
62°
39°
1
Hist. Avg.
61°
39°
2
Hist. Avg.
61°
39°
3
Hist. Avg.
60°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Clarendon
Clarendon's September 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 41° and 51°. The average high for September is 68° with an average low of 46°. 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 Clarendon. See also: October | November | December.