S
M
T
W
T
F
S
26
53°
43°
27
68°
38°
28
63°
42°
29
62°
52°
30
70°
51°
1
63°
45°
2
62°
48°
3
62°
43°
4
76°
49°
5
85°
62°
6
73°
63°
7
65°
50°
8
71°
48°
9
77°
56°
10
77°
55°
11
62°
47°
12
69°
43°
13
77°
54°
14
65°
55°
15
70°
51°
16
84°
53°
17
87°
64°
18
95°
64°
19
97°
72°
20
97°
70°
21
73°
57°
22
62°
55°
23
57°
54°
24
65°
57°
25
76°
64°
26
76°
66°
27
81°
64°
28
79°
55°
29
78°
56°
30
67°
49°
31
68°
51°
1
74°
52°
2
70°
54°
3
76°
56°
4
78°
59°
5
79°
60°
6
81°
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 67° to 81°, with overnight lows between 49° and 66°. The average high for May is 76° with an average low of 57°. 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.
