S
M
T
W
T
F
S
26
85°
71°
27
89°
73°
28
85°
74°
29
83°
61°
30
66°
58°
1
60°
50°
2
74°
48°
3
78°
59°
4
83°
68°
5
87°
71°
6
84°
57°
7
70°
59°
8
75°
65°
9
83°
67°
10
84°
67°
11
77°
61°
12
81°
63°
13
85°
65°
14
87°
67°
15
86°
68°
16
89°
67°
17
80°
66°
18
80°
68°
19
81°
66°
20
83°
68°
21
87°
66°
22
81°
62°
23
80°
62°
24
82°
65°
25
84°
63°
26
81°
62°
27
81°
63°
28
82°
65°
29
81°
67°
30
83°
67°
31
81°
69°
1
84°
69°
2
85°
68°
3
85°
72°
4
86°
72°
5
85°
70°
6
85°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Round Mountain
Round Mountain's May 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 57° and 72°. The average high for May is 82° with an average low of 66°. 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 Round Mountain. See also: June | July | August.