S
M
T
W
T
F
S
26
84°
73°
27
86°
77°
28
88°
75°
29
86°
75°
30
88°
66°
1
66°
55°
2
73°
54°
3
79°
64°
4
79°
64°
5
81°
70°
6
84°
70°
7
77°
63°
8
75°
66°
9
87°
72°
10
89°
69°
11
84°
68°
12
86°
68°
13
87°
68°
14
86°
69°
15
85°
72°
16
86°
73°
17
88°
74°
18
88°
74°
19
84°
75°
20
85°
74°
21
86°
75°
22
87°
70°
23
84°
73°
24
85°
72°
25
84°
73°
26
84°
74°
27
85°
73°
28
85°
74°
29
86°
74°
30
86°
73°
31
87°
75°
1
86°
75°
2
86°
74°
3
87°
75°
4
86°
75°
5
87°
74°
6
88°
74°
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 84° to 89°, with overnight lows between 68° and 75°. The average high for May is 86° with an average low of 73°. 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.
