S
M
T
W
T
F
S
30
87°
61°
31
81°
59°
1
79°
65°
2
80°
63°
3
83°
60°
4
84°
66°
5
86°
66°
6
86°
59°
7
84°
59°
8
78°
57°
9
77°
58°
10
79°
61°
11
83°
58°
12
81°
57°
13
76°
56°
14
75°
62°
15
80°
63°
16
82°
55°
17
82°
54°
18
73°
52°
19
73°
54°
20
74°
59°
21
72°
59°
22
73°
53°
23
71°
56°
24
71°
55°
25
73°
58°
26
75°
58°
27
78°
52°
28
77°
50°
29
70°
56°
30
71°
56°
1
70°
57°
2
72°
55°
3
74°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Groveton
Groveton's September 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 49° and 66°. The average high for September is 77° with an average low of 58°. 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 Groveton. See also: October | November | December.