S
M
T
W
T
F
S
30
89°
62°
31
90°
68°
1
92°
70°
2
94°
69°
3
94°
68°
4
90°
68°
5
81°
61°
6
82°
58°
7
81°
57°
8
78°
56°
9
81°
57°
10
83°
55°
11
80°
54°
12
77°
51°
13
77°
53°
14
76°
52°
15
79°
57°
16
78°
56°
17
78°
55°
18
74°
52°
19
78°
55°
20
80°
56°
21
80°
56°
22
79°
55°
23
80°
55°
24
80°
54°
25
79°
53°
26
77°
52°
27
78°
53°
28
78°
53°
29
77°
52°
30
76°
51°
1
75°
50°
2
75°
50°
3
76°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nelsonville
Nelsonville's September 2026 forecast shows daily high temperatures ranging from 74° to 94°, with overnight lows between 50° and 70°. The average high for September is 80° with an average low of 56°. 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 Nelsonville. See also: October | November | December.