S
M
T
W
T
F
S
30
79°
38°
31
79°
41°
1
81°
43°
2
79°
43°
3
76°
41°
4
71°
42°
5
75°
43°
6
80°
43°
7
80°
42°
8
79°
42°
9
78°
38°
10
75°
35°
11
71°
35°
12
72°
31°
13
71°
32°
14
69°
36°
15
70°
37°
16
75°
38°
17
74°
40°
18
75°
41°
19
67°
41°
20
66°
39°
21
71°
39°
22
75°
38°
23
73°
38°
24
72°
37°
25
74°
38°
26
74°
38°
27
73°
33°
28
69°
35°
29
65°
38°
30
71°
39°
1
73°
40°
2
74°
38°
3
73°
33°
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 65° to 81°, with overnight lows between 31° and 43°. The average high for September is 74° with an average low of 38°. 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.
