S
M
T
W
T
F
S
26
65°
38°
27
70°
43°
28
61°
48°
29
53°
41°
30
53°
39°
1
48°
38°
2
49°
31°
3
64°
35°
4
75°
45°
5
58°
46°
6
52°
37°
7
55°
33°
8
64°
33°
9
68°
45°
10
60°
33°
11
58°
34°
12
63°
33°
13
58°
42°
14
65°
44°
15
70°
39°
16
82°
49°
17
85°
58°
18
87°
66°
19
85°
64°
20
63°
48°
21
63°
38°
22
69°
41°
23
58°
52°
24
64°
52°
25
80°
54°
26
82°
52°
27
79°
54°
28
71°
45°
29
79°
47°
30
70°
45°
31
74°
47°
1
75°
47°
2
73°
50°
3
77°
56°
4
81°
58°
5
76°
57°
6
76°
57°
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 70° to 81°, with overnight lows between 45° and 58°. The average high for May is 75° with an average low of 51°. 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.