S
M
T
W
T
F
S
26
80°
54°
27
78°
51°
28
80°
54°
29
73°
54°
30
79°
55°
1
79°
54°
2
81°
56°
3
82°
57°
4
79°
55°
5
81°
48°
6
73°
47°
7
74°
48°
8
75°
51°
9
80°
54°
10
76°
50°
11
76°
50°
12
79°
56°
13
83°
58°
14
84°
58°
15
84°
59°
16
83°
59°
17
85°
60°
18
86°
60°
19
86°
59°
20
84°
60°
21
84°
60°
22
78°
59°
23
79°
55°
24
80°
57°
25
86°
60°
26
85°
57°
27
82°
56°
28
84°
62°
29
88°
63°
30
86°
59°
31
87°
59°
1
87°
57°
2
88°
57°
3
83°
58°
4
82°
58°
5
83°
59°
6
84°
59°
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 73° to 88°, with overnight lows between 47° and 63°. The average high for May is 82° with an average low of 56°. 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.
