S
M
T
W
T
F
S
30
91°
70°
31
93°
70°
1
95°
72°
2
97°
70°
3
99°
72°
4
99°
72°
5
95°
72°
6
88°
70°
7
90°
63°
8
90°
70°
9
91°
73°
10
86°
72°
11
90°
70°
12
81°
72°
13
90°
70°
14
86°
68°
15
95°
61°
16
95°
73°
17
95°
70°
18
95°
70°
19
91°
70°
20
93°
72°
21
93°
70°
22
73°
66°
23
72°
64°
24
77°
63°
25
77°
55°
26
77°
54°
27
75°
45°
28
77°
46°
29
81°
48°
30
84°
60°
1
86°
67°
2
84°
63°
3
67°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in State Line
State Line's September 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 59° and 67°. The average high for September is 80° with an average low of 62°. 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 State Line. See also: October | November | December.
