S
M
T
W
T
F
S
26
70°
51°
27
71°
54°
28
71°
58°
29
64°
50°
30
60°
41°
1
55°
41°
2
54°
37°
3
64°
36°
4
77°
53°
5
68°
47°
6
58°
44°
7
62°
38°
8
68°
49°
9
76°
54°
10
71°
56°
11
71°
42°
12
78°
44°
13
67°
51°
14
66°
42°
15
70°
44°
16
74°
60°
17
85°
64°
18
85°
66°
19
86°
65°
20
68°
57°
21
68°
54°
22
64°
59°
23
68°
59°
24
72°
57°
25
79°
61°
26
79°
66°
27
74°
62°
28
83°
59°
29
78°
58°
30
74°
57°
31
74°
55°
1
76°
56°
2
76°
55°
3
78°
59°
4
77°
60°
5
79°
61°
6
78°
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 72° to 83°, with overnight lows between 55° and 66°. The average high for May is 77° with an average low of 59°. 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.
