S
M
T
W
T
F
S
28
80°
63°
29
81°
62°
30
80°
62°
1
82°
62°
2
87°
59°
3
93°
58°
4
90°
65°
5
90°
64°
6
93°
63°
7
96°
65°
8
97°
67°
9
96°
63°
10
94°
64°
11
92°
65°
12
93°
67°
13
97°
68°
14
99°
70°
15
96°
69°
16
98°
70°
17
95°
65°
18
95°
65°
19
94°
67°
20
95°
68°
21
96°
68°
22
97°
67°
23
97°
69°
24
96°
69°
25
97°
68°
26
97°
69°
27
96°
68°
28
97°
68°
29
97°
67°
30
96°
69°
31
97°
68°
1
96°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Rialto
Rialto's July 2026 forecast shows daily high temperatures ranging from 90° to 99°, with overnight lows between 63° and 70°. The average high for July is 95° 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 July weather will actually feel in Rialto. See also: August | September | October.