S
M
T
W
T
F
S
26
88°
72°
27
87°
64°
28
87°
67°
29
88°
71°
30
93°
66°
31
91°
70°
1
94°
66°
2
88°
66°
3
86°
67°
4
85°
64°
5
86°
65°
6
85°
65°
7
86°
66°
8
85°
68°
9
86°
67°
10
89°
69°
11
90°
71°
12
86°
71°
13
93°
70°
14
93°
63°
15
89°
64°
16
84°
69°
17
86°
70°
18
90°
64°
19
91°
63°
20
85°
68°
21
88°
67°
22
91°
67°
23
89°
69°
24
90°
68°
25
89°
67°
26
92°
65°
27
84°
67°
28
88°
67°
29
86°
68°
30
88°
68°
31
90°
67°
1
88°
66°
2
86°
66°
3
84°
59°
4
85°
59°
5
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pomona
Pomona's August 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 58° and 72°. The average high for August is 88° with an average low of 67°. 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 Pomona. See also: September | October | November.