S
M
T
W
T
F
S
31
86°
73°
1
88°
73°
2
88°
66°
3
82°
57°
4
83°
61°
5
84°
67°
6
86°
68°
7
87°
72°
8
87°
72°
9
86°
73°
10
82°
71°
11
85°
72°
12
89°
71°
13
86°
72°
14
85°
71°
15
86°
69°
16
88°
72°
17
88°
71°
18
90°
72°
19
90°
72°
20
91°
73°
21
91°
73°
22
90°
72°
23
91°
73°
24
91°
73°
25
88°
72°
26
91°
73°
27
90°
72°
28
91°
73°
29
87°
73°
30
88°
72°
1
90°
73°
2
90°
73°
3
91°
72°
4
90°
73°
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 91°, with overnight lows between 57° and 73°. The average high for June is 88° with an average low of 71°. 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.