S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
65°
57°
2
72°
48°
3
74°
44°
4
81°
46°
5
79°
53°
6
80°
67°
7
74°
59°
8
68°
54°
9
77°
60°
10
81°
59°
11
80°
63°
12
81°
59°
13
82°
56°
14
79°
52°
15
84°
59°
16
84°
59°
17
88°
65°
18
89°
67°
19
91°
67°
20
87°
66°
21
85°
65°
22
85°
63°
23
84°
60°
24
85°
61°
25
86°
64°
26
87°
62°
27
85°
66°
28
87°
67°
29
87°
67°
30
83°
66°
31
84°
63°
1
84°
65°
2
87°
66°
3
89°
67°
4
90°
68°
5
90°
68°
6
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cypress
Cypress's May 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 52° and 68°. The average high for May is 86° with an average low of 64°. 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 Cypress. See also: June | July | August.