S
M
T
W
T
F
S
26
82°
52°
27
82°
65°
28
78°
62°
29
70°
55°
30
66°
46°
1
65°
45°
2
66°
41°
3
71°
38°
4
81°
59°
5
66°
50°
6
61°
46°
7
67°
43°
8
74°
43°
9
81°
52°
10
76°
56°
11
77°
49°
12
80°
48°
13
80°
52°
14
73°
46°
15
83°
52°
16
82°
71°
17
87°
69°
18
88°
68°
19
87°
66°
20
70°
63°
21
67°
61°
22
67°
62°
23
75°
64°
24
78°
64°
25
79°
63°
26
79°
68°
27
86°
69°
28
86°
68°
29
77°
68°
30
82°
64°
31
83°
67°
1
80°
64°
2
81°
57°
3
83°
58°
4
84°
66°
5
84°
67°
6
85°
66°
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 77° to 85°, with overnight lows between 57° and 68°. The average high for May is 82° with an average low of 64°. 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.