S
M
T
W
T
F
S
30
85°
58°
31
82°
53°
1
80°
53°
2
79°
54°
3
79°
54°
4
80°
55°
5
79°
57°
6
77°
59°
7
78°
59°
8
80°
54°
9
77°
52°
10
77°
52°
11
76°
51°
12
76°
51°
13
75°
53°
14
74°
50°
15
75°
54°
16
75°
50°
17
76°
49°
18
76°
53°
19
76°
56°
20
81°
56°
21
Hist. Avg.
75°
50°
22
Hist. Avg.
75°
49°
23
Hist. Avg.
74°
49°
24
Hist. Avg.
74°
48°
25
Hist. Avg.
74°
48°
26
Hist. Avg.
73°
47°
27
Hist. Avg.
73°
47°
28
Hist. Avg.
72°
46°
29
Hist. Avg.
72°
46°
30
Hist. Avg.
72°
46°
1
Hist. Avg.
71°
45°
2
Hist. Avg.
71°
45°
3
Hist. Avg.
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Clarion
Clarion's September 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 49° and 59°. The average high for September is 78° with an average low of 54°. 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 Clarion. See also: October | November | December.
