S
M
T
W
T
F
S
30
83°
59°
31
83°
62°
1
82°
62°
2
83°
61°
3
83°
54°
4
75°
53°
5
75°
55°
6
78°
61°
7
82°
61°
8
82°
60°
9
76°
56°
10
75°
60°
11
81°
59°
12
80°
60°
13
81°
60°
14
81°
59°
15
80°
59°
16
80°
58°
17
74°
56°
18
79°
51°
19
71°
49°
20
71°
48°
21
69°
47°
22
70°
52°
23
71°
51°
24
72°
47°
25
69°
48°
26
71°
55°
27
70°
54°
28
76°
55°
29
75°
54°
30
75°
53°
1
70°
51°
2
74°
52°
3
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barnesville
Barnesville's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 47° and 62°. The average high for September is 76° with an average low of 55°. 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 Barnesville. See also: October | November | December.