S
M
T
W
T
F
S
26
67°
43°
27
59°
41°
28
60°
42°
29
65°
46°
30
68°
50°
1
65°
51°
2
72°
51°
3
66°
48°
4
69°
44°
5
62°
41°
6
66°
51°
7
73°
53°
8
71°
52°
9
69°
46°
10
64°
42°
11
65°
50°
12
65°
48°
13
66°
49°
14
66°
53°
15
69°
54°
16
72°
55°
17
74°
55°
18
71°
50°
19
68°
45°
20
66°
45°
21
71°
55°
22
70°
48°
23
70°
48°
24
71°
49°
25
75°
50°
26
77°
47°
27
70°
48°
28
76°
48°
29
79°
52°
30
79°
49°
31
75°
56°
1
72°
56°
2
72°
50°
3
73°
50°
4
76°
59°
5
81°
58°
6
82°
58°
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 59° to 82°, with overnight lows between 41° and 59°. The average high for May is 70° with an average low of 50°. 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.
