S
M
T
W
T
F
S
30
74°
37°
31
74°
38°
1
76°
43°
2
81°
45°
3
81°
35°
4
71°
41°
5
73°
39°
6
77°
34°
7
73°
35°
8
71°
38°
9
76°
38°
10
78°
39°
11
79°
43°
12
79°
44°
13
81°
43°
14
80°
34°
15
75°
36°
16
73°
35°
17
70°
37°
18
70°
41°
19
76°
39°
20
77°
39°
21
77°
40°
22
74°
38°
23
67°
29°
24
66°
30°
25
65°
29°
26
64°
31°
27
64°
35°
28
67°
36°
29
71°
30°
30
68°
30°
1
Hist. Avg.
68°
32°
2
Hist. Avg.
68°
32°
3
Hist. Avg.
67°
32°
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 64° to 81°, with overnight lows between 29° and 45°. The average high for September is 73° with an average low of 37°. 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.
