S
M
T
W
T
F
S
30
92°
62°
31
94°
66°
1
96°
66°
2
96°
66°
3
99°
68°
4
98°
69°
5
91°
67°
6
86°
64°
7
88°
60°
8
91°
62°
9
92°
66°
10
80°
68°
11
82°
65°
12
83°
65°
13
90°
66°
14
79°
57°
15
92°
51°
16
95°
64°
17
94°
69°
18
84°
67°
19
88°
65°
20
82°
67°
21
85°
60°
22
68°
55°
23
69°
59°
24
68°
45°
25
74°
49°
26
75°
48°
27
75°
48°
28
76°
52°
29
77°
53°
30
80°
63°
1
76°
58°
2
75°
56°
3
75°
53°
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 68° to 80°, with overnight lows between 45° and 63°. The average high for September is 75° with an average low of 53°. 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.