S
M
T
W
T
F
S
30
102°
77°
31
102°
77°
1
100°
78°
2
100°
77°
3
95°
76°
4
95°
74°
5
99°
74°
6
100°
77°
7
101°
76°
8
99°
75°
9
96°
76°
10
96°
74°
11
99°
76°
12
100°
74°
13
95°
71°
14
93°
69°
15
94°
71°
16
96°
69°
17
88°
64°
18
83°
65°
19
85°
68°
20
90°
68°
21
91°
67°
22
90°
67°
23
90°
68°
24
89°
67°
25
90°
65°
26
89°
62°
27
79°
56°
28
79°
55°
29
78°
57°
30
83°
60°
1
87°
63°
2
87°
56°
3
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Argyle
Argyle's September 2026 forecast shows daily high temperatures ranging from 77° to 101°, with overnight lows between 53° and 77°. The average high for September is 91° with an average low of 67°. 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 Argyle. See also: October | November | December.