S
M
T
W
T
F
S
26
82°
55°
27
82°
55°
28
73°
64°
29
82°
63°
30
70°
54°
1
66°
50°
2
70°
46°
3
72°
39°
4
81°
43°
5
77°
48°
6
79°
63°
7
72°
52°
8
70°
48°
9
73°
55°
10
82°
61°
11
79°
57°
12
81°
52°
13
82°
54°
14
75°
48°
15
81°
45°
16
84°
52°
17
90°
55°
18
90°
59°
19
90°
68°
20
90°
66°
21
81°
70°
22
75°
68°
23
84°
66°
24
79°
66°
25
75°
68°
26
79°
70°
27
81°
69°
28
82°
67°
29
78°
66°
30
78°
63°
31
79°
60°
1
79°
59°
2
79°
59°
3
78°
58°
4
81°
63°
5
81°
62°
6
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Houston
Houston's May 2026 forecast shows daily high temperatures ranging from 78° to 82°, with overnight lows between 58° and 70°. The average high for May is 80° with an average low of 63°. 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 Houston. See also: June | July | August.
