S
M
T
W
T
F
S
30
86°
66°
31
88°
59°
1
82°
52°
2
86°
61°
3
95°
66°
4
90°
57°
5
88°
66°
6
81°
68°
7
80°
68°
8
87°
56°
9
77°
53°
10
89°
61°
11
86°
50°
12
75°
50°
13
66°
50°
14
66°
46°
15
70°
51°
16
73°
52°
17
71°
49°
18
68°
46°
19
67°
48°
20
71°
45°
21
70°
52°
22
74°
53°
23
75°
52°
24
73°
50°
25
69°
50°
26
70°
51°
27
71°
51°
28
73°
50°
29
71°
48°
30
60°
47°
1
59°
45°
2
58°
39°
3
57°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barney
Barney's September 2026 forecast shows daily high temperatures ranging from 57° to 89°, with overnight lows between 39° and 68°. The average high for September is 71° with an average low of 50°. 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 Barney. See also: October | November | December.