S
M
T
W
T
F
S
30
86°
63°
31
86°
63°
1
85°
62°
2
86°
62°
3
85°
61°
4
85°
62°
5
84°
60°
6
85°
61°
7
86°
62°
8
87°
62°
9
87°
61°
10
86°
62°
11
86°
62°
12
85°
61°
13
86°
62°
14
85°
59°
15
83°
55°
16
81°
58°
17
82°
57°
18
78°
51°
19
74°
49°
20
74°
50°
21
81°
50°
22
82°
51°
23
81°
55°
24
80°
53°
25
76°
51°
26
78°
52°
27
77°
54°
28
79°
53°
29
76°
48°
30
71°
49°
1
78°
49°
2
79°
48°
3
78°
50°
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 71° to 87°, with overnight lows between 48° and 63°. The average high for September is 82° 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 State Line. See also: October | November | December.
