S
M
T
W
T
F
S
31
83°
64°
1
83°
65°
2
82°
66°
3
82°
66°
4
83°
65°
5
82°
66°
6
82°
66°
7
83°
65°
8
86°
67°
9
84°
64°
10
87°
65°
11
90°
66°
12
87°
67°
13
88°
68°
14
90°
66°
15
86°
61°
16
86°
63°
17
90°
67°
18
88°
63°
19
86°
64°
20
91°
64°
21
88°
67°
22
87°
66°
23
86°
65°
24
89°
64°
25
91°
64°
26
90°
63°
27
88°
64°
28
89°
64°
29
88°
66°
30
89°
66°
1
88°
65°
2
90°
66°
3
93°
67°
4
93°
71°
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 82° to 93°, with overnight lows between 61° and 71°. The average high for June is 87° with an average low of 65°. 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.