S
M
T
W
T
F
S
30
93°
61°
31
97°
64°
1
97°
68°
2
95°
70°
3
95°
70°
4
99°
72°
5
100°
72°
6
100°
72°
7
96°
66°
8
97°
71°
9
96°
73°
10
89°
68°
11
89°
68°
12
95°
66°
13
96°
68°
14
94°
68°
15
88°
65°
16
86°
63°
17
87°
64°
18
89°
63°
19
86°
61°
20
82°
57°
21
88°
64°
22
87°
62°
23
86°
62°
24
86°
61°
25
85°
63°
26
85°
62°
27
84°
61°
28
84°
62°
29
83°
61°
30
83°
60°
1
81°
52°
2
71°
50°
3
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Greenbrier
Greenbrier's September 2026 forecast shows daily high temperatures ranging from 71° to 97°, with overnight lows between 48° and 73°. The average high for September is 87° with an average low of 63°. 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 Greenbrier. See also: October | November | December.
