S
M
T
W
T
F
S
26
75°
55°
27
77°
54°
28
75°
53°
29
74°
54°
30
68°
54°
1
75°
55°
2
70°
54°
3
69°
55°
4
73°
51°
5
74°
54°
6
77°
54°
7
78°
56°
8
79°
57°
9
80°
57°
10
80°
58°
11
79°
58°
12
80°
59°
13
81°
59°
14
81°
58°
15
78°
56°
16
79°
55°
17
81°
58°
18
82°
53°
19
79°
53°
20
75°
54°
21
77°
53°
22
76°
58°
23
83°
61°
24
84°
62°
25
85°
63°
26
86°
62°
27
86°
63°
28
87°
63°
29
86°
64°
30
87°
60°
31
87°
58°
1
84°
64°
2
87°
64°
3
88°
65°
4
89°
65°
5
89°
58°
6
87°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Greenbrier
Greenbrier's May 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 51° and 65°. The average high for May is 80° 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 May weather will actually feel in Greenbrier. See also: June | July | August.