S
M
T
W
T
F
S
26
73°
51°
27
68°
49°
28
62°
46°
29
57°
40°
30
57°
35°
1
55°
32°
2
64°
33°
3
73°
51°
4
73°
38°
5
55°
34°
6
50°
35°
7
56°
38°
8
63°
40°
9
63°
42°
10
62°
42°
11
62°
47°
12
63°
48°
13
65°
48°
14
63°
45°
15
65°
52°
16
67°
50°
17
68°
48°
18
68°
53°
19
71°
51°
20
68°
51°
21
65°
44°
22
62°
44°
23
63°
45°
24
64°
45°
25
64°
46°
26
65°
46°
27
64°
47°
28
64°
47°
29
66°
55°
30
66°
54°
31
67°
51°
1
71°
54°
2
74°
58°
3
75°
58°
4
77°
59°
5
77°
60°
6
76°
61°
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 50° to 77°, with overnight lows between 34° and 61°. The average high for May is 66° with an average low of 48°. 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.
