S
M
T
W
T
F
S
30
93°
64°
31
98°
69°
1
98°
69°
2
98°
68°
3
104°
71°
4
100°
71°
5
101°
71°
6
97°
70°
7
89°
63°
8
94°
73°
9
95°
74°
10
93°
69°
11
85°
68°
12
90°
68°
13
92°
71°
14
91°
71°
15
90°
69°
16
83°
66°
17
83°
64°
18
80°
60°
19
79°
61°
20
78°
59°
21
81°
58°
22
83°
62°
23
84°
63°
24
84°
63°
25
83°
62°
26
84°
62°
27
84°
61°
28
83°
62°
29
83°
62°
30
82°
61°
1
83°
59°
2
80°
52°
3
70°
49°
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 70° to 95°, with overnight lows between 49° and 74°. The average high for September is 85° 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.
