S
M
T
W
T
F
S
30
86°
64°
31
86°
64°
1
87°
63°
2
87°
65°
3
86°
64°
4
86°
63°
5
85°
63°
6
86°
64°
7
86°
63°
8
80°
61°
9
78°
61°
10
82°
60°
11
83°
61°
12
82°
61°
13
83°
59°
14
69°
51°
15
71°
57°
16
70°
56°
17
76°
53°
18
73°
47°
19
74°
50°
20
77°
54°
21
74°
55°
22
74°
55°
23
75°
53°
24
71°
54°
25
71°
55°
26
70°
52°
27
78°
42°
28
69°
42°
29
68°
47°
30
67°
50°
1
73°
54°
2
76°
54°
3
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clearfield
Clearfield's September 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 42° and 65°. The average high for September is 78° 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 Clearfield. See also: October | November | December.