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
95°
70°
8
100°
64°
9
99°
70°
10
95°
71°
11
83°
69°
12
94°
67°
13
95°
68°
14
92°
70°
15
97°
69°
16
96°
69°
17
95°
65°
18
88°
59°
19
78°
53°
20
84°
60°
21
82°
61°
22
84°
60°
23
81°
56°
24
86°
61°
25
86°
62°
26
85°
62°
27
85°
60°
28
84°
60°
29
85°
59°
30
82°
60°
1
82°
58°
2
81°
58°
3
82°
57°
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 78° to 97°, with overnight lows between 53° and 71°. The average high for September is 87° with an average low of 62°. 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.
