S
M
T
W
T
F
S
30
75°
35°
31
76°
39°
1
69°
44°
2
61°
43°
3
61°
40°
4
57°
36°
5
65°
35°
6
68°
43°
7
72°
32°
8
77°
32°
9
81°
39°
10
83°
45°
11
77°
43°
12
76°
40°
13
68°
36°
14
69°
28°
15
73°
30°
16
69°
38°
17
62°
33°
18
65°
36°
19
69°
39°
20
68°
44°
21
71°
41°
22
75°
37°
23
76°
40°
24
77°
42°
25
73°
39°
26
73°
38°
27
69°
40°
28
68°
41°
29
66°
38°
30
68°
33°
1
70°
38°
2
68°
38°
3
70°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stateline
Stateline's September 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 33° and 44°. The average high for September is 70° with an average low of 39°. 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 Stateline. See also: October | November | December.
