S
M
T
W
T
F
S
26
80°
51°
27
85°
55°
28
80°
61°
29
70°
56°
30
64°
46°
1
64°
43°
2
62°
40°
3
67°
37°
4
82°
51°
5
77°
59°
6
64°
50°
7
65°
45°
8
73°
40°
9
77°
57°
10
78°
53°
11
74°
52°
12
77°
47°
13
78°
57°
14
68°
48°
15
79°
42°
16
85°
66°
17
90°
64°
18
90°
71°
19
90°
68°
20
74°
65°
21
73°
66°
22
75°
68°
23
77°
64°
24
78°
66°
25
81°
64°
26
80°
63°
27
78°
65°
28
80°
64°
29
79°
62°
30
80°
60°
31
80°
58°
1
83°
63°
2
84°
62°
3
80°
61°
4
77°
57°
5
77°
56°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oak Grove
Oak Grove's May 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 56° and 71°. The average high for May is 80° 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 May weather will actually feel in Oak Grove. See also: June | July | August.