S
M
T
W
T
F
S
26
51°
35°
27
57°
36°
28
63°
42°
29
63°
30°
30
53°
32°
1
67°
24°
2
76°
29°
3
78°
33°
4
78°
36°
5
45°
32°
6
48°
32°
7
73°
29°
8
74°
46°
9
76°
44°
10
71°
46°
11
89°
43°
12
80°
53°
13
91°
49°
14
85°
55°
15
84°
47°
16
79°
57°
17
72°
47°
18
48°
39°
19
55°
37°
20
63°
45°
21
74°
41°
22
69°
39°
23
73°
41°
24
85°
44°
25
87°
55°
26
83°
56°
27
76°
54°
28
81°
51°
29
81°
52°
30
80°
53°
31
77°
51°
1
74°
49°
2
76°
48°
3
81°
52°
4
79°
51°
5
81°
54°
6
83°
53°
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 74° to 87°, with overnight lows between 48° and 56°. The average high for May is 80° with an average low of 52°. 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.
