S
M
T
W
T
F
S
30
75°
35°
31
76°
39°
1
69°
44°
2
61°
43°
3
60°
46°
4
56°
41°
5
64°
45°
6
61°
39°
7
68°
41°
8
72°
41°
9
72°
43°
10
65°
42°
11
72°
39°
12
73°
40°
13
72°
42°
14
71°
42°
15
70°
43°
16
73°
36°
17
76°
41°
18
67°
40°
19
67°
37°
20
69°
38°
21
74°
40°
22
75°
40°
23
72°
39°
24
69°
39°
25
66°
38°
26
71°
39°
27
73°
39°
28
73°
40°
29
72°
39°
30
71°
39°
1
72°
40°
2
72°
39°
3
71°
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 56° to 76°, with overnight lows between 36° and 46°. The average high for September is 70° with an average low of 40°. 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.
