S
M
T
W
T
F
S
26
63°
51°
27
69°
45°
28
71°
40°
29
74°
52°
30
72°
52°
1
62°
46°
2
54°
50°
3
67°
46°
4
78°
55°
5
83°
58°
6
83°
63°
7
74°
47°
8
69°
43°
9
68°
48°
10
75°
49°
11
75°
55°
12
73°
52°
13
75°
54°
14
79°
57°
15
80°
55°
16
76°
55°
17
79°
56°
18
81°
59°
19
82°
60°
20
83°
61°
21
81°
61°
22
77°
54°
23
75°
53°
24
75°
54°
25
77°
57°
26
79°
57°
27
77°
55°
28
77°
55°
29
78°
57°
30
78°
59°
31
79°
61°
1
79°
64°
2
81°
63°
3
80°
63°
4
81°
64°
5
83°
64°
6
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Red Oak
Red Oak's May 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 43° and 65°. The average high for May is 78° with an average low of 57°. 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 Red Oak. See also: June | July | August.