S
M
T
W
T
F
S
26
95°
72°
27
95°
75°
28
96°
73°
29
95°
73°
30
96°
75°
31
96°
75°
1
93°
78°
2
96°
75°
3
98°
73°
4
96°
73°
5
95°
75°
6
96°
74°
7
97°
75°
8
94°
73°
9
93°
75°
10
91°
77°
11
96°
75°
12
98°
77°
13
98°
76°
14
97°
75°
15
96°
76°
16
95°
75°
17
98°
76°
18
97°
77°
19
98°
75°
20
96°
76°
21
95°
74°
22
96°
75°
23
96°
76°
24
96°
76°
25
96°
76°
26
95°
75°
27
96°
76°
28
96°
76°
29
95°
75°
30
96°
76°
31
96°
76°
1
95°
75°
2
95°
76°
3
94°
76°
4
95°
75°
5
93°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tomball
Tomball's August 2026 forecast shows daily high temperatures ranging from 91° to 98°, with overnight lows between 73° and 77°. The average high for August is 96° with an average low of 76°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Tomball. See also: September | October | November.