S
M
T
W
T
F
S
26
80°
54°
27
83°
61°
28
67°
53°
29
66°
48°
30
65°
39°
1
64°
41°
2
64°
39°
3
75°
38°
4
79°
58°
5
65°
43°
6
60°
43°
7
66°
37°
8
75°
46°
9
81°
50°
10
72°
54°
11
74°
44°
12
77°
47°
13
76°
50°
14
74°
42°
15
81°
55°
16
82°
64°
17
85°
69°
18
83°
69°
19
75°
56°
20
65°
52°
21
71°
53°
22
76°
58°
23
77°
61°
24
78°
63°
25
79°
59°
26
81°
62°
27
79°
63°
28
80°
62°
29
78°
58°
30
78°
62°
31
81°
63°
1
82°
63°
2
81°
62°
3
77°
61°
4
75°
57°
5
79°
62°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountain Grove
Mountain Grove's May 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 52° and 69°. The average high for May is 78° with an average low of 61°. 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 Mountain Grove. See also: June | July | August.