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
94°
62°
5
92°
67°
6
94°
64°
7
96°
65°
8
99°
67°
9
100°
66°
10
97°
64°
11
94°
65°
12
88°
67°
13
98°
71°
14
97°
72°
15
100°
71°
16
103°
70°
17
98°
71°
18
97°
69°
19
94°
64°
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 88° to 103°, with overnight lows between 64° and 72°. The average high for July is 97° 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 July weather will actually feel in Rialto. See also: August | September | October.