S
M
T
W
T
F
S
26
70°
56°
27
73°
52°
28
66°
51°
29
81°
59°
30
75°
57°
1
62°
54°
2
60°
43°
3
69°
38°
4
79°
46°
5
81°
52°
6
81°
61°
7
78°
57°
8
71°
52°
9
74°
54°
10
83°
58°
11
70°
53°
12
72°
47°
13
79°
45°
14
75°
52°
15
76°
42°
16
85°
50°
17
88°
63°
18
90°
64°
19
91°
63°
20
92°
65°
21
92°
66°
22
71°
64°
23
66°
61°
24
82°
60°
25
83°
70°
26
81°
69°
27
84°
68°
28
85°
67°
29
82°
67°
30
76°
57°
31
78°
57°
1
76°
59°
2
76°
58°
3
77°
61°
4
77°
59°
5
81°
64°
6
80°
65°
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 76° to 85°, with overnight lows between 57° and 69°. The average high for May is 79° with an average low of 63°. 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.
