S
M
T
W
T
F
S
26
89°
60°
27
90°
61°
28
91°
62°
29
90°
61°
30
92°
62°
31
95°
64°
1
96°
66°
2
96°
66°
3
95°
65°
4
95°
64°
5
94°
63°
6
93°
63°
7
93°
64°
8
94°
64°
9
95°
66°
10
96°
64°
11
96°
61°
12
96°
60°
13
95°
62°
14
94°
66°
15
95°
67°
16
97°
66°
17
99°
66°
18
100°
67°
19
98°
67°
20
99°
66°
21
99°
66°
22
98°
65°
23
99°
65°
24
98°
64°
25
97°
66°
26
97°
65°
27
96°
65°
28
96°
62°
29
95°
61°
30
93°
63°
31
94°
61°
1
94°
60°
2
95°
59°
3
92°
58°
4
91°
57°
5
90°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Eastvale
Eastvale's August 2026 forecast shows daily high temperatures ranging from 89° to 100°, with overnight lows between 57° and 67°. The average high for August is 95° with an average low of 63°. 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 Eastvale. See also: September | October | November.