S
M
T
W
T
F
S
26
80°
61°
27
86°
73°
28
79°
70°
29
70°
61°
30
66°
55°
1
70°
51°
2
74°
49°
3
N/A
4
79°
65°
5
79°
58°
6
61°
49°
7
69°
47°
8
76°
57°
9
71°
58°
10
77°
59°
11
79°
58°
12
77°
57°
13
83°
58°
14
85°
61°
15
80°
62°
16
91°
67°
17
76°
63°
18
76°
64°
19
79°
65°
20
80°
65°
21
82°
58°
22
76°
57°
23
76°
59°
24
77°
60°
25
75°
59°
26
76°
59°
27
77°
60°
28
78°
60°
29
79°
64°
30
79°
67°
31
80°
68°
1
80°
68°
2
81°
65°
3
82°
68°
4
83°
69°
5
81°
69°
6
81°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Red Oak
Red Oak's May 2026 forecast shows daily high temperatures ranging from 61° to 91°, with overnight lows between 47° and 69°. The average high for May is 78° with an average low of 62°. 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.