S
M
T
W
T
F
S
26
83°
70°
27
94°
73°
28
84°
69°
29
72°
59°
30
63°
59°
1
64°
48°
2
76°
42°
3
81°
51°
4
82°
59°
5
92°
63°
6
63°
52°
7
72°
49°
8
74°
54°
9
90°
63°
10
82°
63°
11
78°
57°
12
85°
53°
13
91°
55°
14
91°
66°
15
88°
68°
16
87°
67°
17
86°
74°
18
91°
77°
19
88°
61°
20
79°
62°
21
76°
65°
22
87°
68°
23
78°
63°
24
85°
64°
25
86°
62°
26
84°
68°
27
78°
68°
28
87°
68°
29
87°
69°
30
89°
66°
31
84°
63°
1
83°
62°
2
83°
62°
3
81°
61°
4
82°
64°
5
92°
73°
6
86°
70°
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 78° to 92°, with overnight lows between 61° and 73°. The average high for May is 84° 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 Oak Grove. See also: June | July | August.