S
M
T
W
T
F
S
26
87°
75°
27
90°
76°
28
92°
73°
29
90°
70°
30
83°
68°
1
77°
61°
2
71°
54°
3
76°
57°
4
81°
63°
5
84°
67°
6
85°
67°
7
86°
68°
8
84°
65°
9
81°
63°
10
83°
64°
11
83°
69°
12
86°
69°
13
86°
68°
14
80°
63°
15
80°
63°
16
81°
62°
17
82°
64°
18
82°
64°
19
83°
65°
20
83°
65°
21
84°
69°
22
83°
69°
23
85°
70°
24
84°
71°
25
84°
70°
26
85°
68°
27
85°
69°
28
86°
69°
29
86°
68°
30
87°
68°
31
86°
70°
1
86°
69°
2
87°
72°
3
88°
73°
4
88°
74°
5
90°
74°
6
89°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tomball
Tomball's May 2026 forecast shows daily high temperatures ranging from 71° to 92°, with overnight lows between 54° and 76°. The average high for May is 84° with an average low of 68°. 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 Tomball. See also: June | July | August.
