S
M
T
W
T
F
S
31
80°
62°
1
81°
60°
2
80°
62°
3
81°
61°
4
81°
63°
5
87°
63°
6
89°
63°
7
89°
64°
8
88°
66°
9
90°
64°
10
89°
68°
11
92°
67°
12
91°
68°
13
92°
67°
14
91°
68°
15
92°
68°
16
91°
66°
17
86°
68°
18
92°
69°
19
90°
69°
20
92°
66°
21
88°
69°
22
93°
64°
23
92°
64°
24
93°
69°
25
94°
70°
26
94°
68°
27
92°
67°
28
88°
68°
29
88°
69°
30
89°
70°
1
88°
70°
2
88°
69°
3
92°
70°
4
93°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Riverside
Riverside's June 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 60° and 70°. The average high for June is 89° 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 June weather will actually feel in Riverside. See also: July | August | September.