S
M
T
W
T
F
S
30
90°
69°
31
89°
68°
1
87°
68°
2
85°
67°
3
85°
67°
4
84°
66°
5
84°
65°
6
83°
66°
7
83°
66°
8
84°
65°
9
83°
62°
10
83°
66°
11
82°
60°
12
86°
63°
13
88°
65°
14
86°
58°
15
82°
57°
16
81°
58°
17
80°
57°
18
84°
58°
19
86°
58°
20
85°
61°
21
85°
61°
22
84°
62°
23
82°
61°
24
82°
56°
25
81°
58°
26
84°
55°
27
83°
55°
28
83°
59°
29
82°
59°
30
84°
60°
1
84°
59°
2
83°
59°
3
83°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Newnan
West Newnan's September 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 55° and 69°. The average high for September is 84° with an average low of 61°. 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 West Newnan. See also: October | November | December.
