S
M
T
W
T
F
S
30
83°
62°
31
83°
65°
1
87°
65°
2
83°
57°
3
82°
55°
4
80°
55°
5
80°
56°
6
82°
56°
7
85°
57°
8
86°
63°
9
87°
62°
10
85°
55°
11
81°
58°
12
82°
61°
13
82°
53°
14
80°
53°
15
78°
51°
16
78°
52°
17
79°
56°
18
82°
55°
19
83°
59°
20
83°
58°
21
85°
58°
22
83°
59°
23
83°
59°
24
79°
58°
25
81°
58°
26
83°
57°
27
84°
57°
28
84°
56°
29
83°
56°
30
84°
55°
1
83°
57°
2
83°
48°
3
82°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Athens
New Athens's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 46° and 65°. The average high for September is 83° with an average low of 57°. 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 New Athens. See also: October | November | December.