S
M
T
W
T
F
S
30
84°
63°
31
85°
62°
1
86°
62°
2
83°
57°
3
80°
57°
4
82°
59°
5
84°
59°
6
85°
61°
7
85°
62°
8
86°
62°
9
86°
61°
10
85°
61°
11
84°
60°
12
86°
62°
13
86°
62°
14
83°
53°
15
74°
53°
16
75°
54°
17
78°
55°
18
84°
57°
19
84°
58°
20
83°
57°
21
81°
54°
22
75°
55°
23
74°
56°
24
73°
56°
25
74°
55°
26
77°
55°
27
81°
54°
28
81°
54°
29
80°
53°
30
80°
53°
1
79°
46°
2
75°
43°
3
67°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Argillite
Argillite's September 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 40° and 63°. The average high for September is 81° 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 Argillite. See also: October | November | December.