S
M
T
W
T
F
S
31
90°
57°
1
90°
58°
2
85°
58°
3
89°
60°
4
91°
60°
5
89°
58°
6
83°
58°
7
82°
59°
8
83°
58°
9
90°
61°
10
93°
62°
11
90°
61°
12
91°
61°
13
92°
62°
14
89°
58°
15
89°
62°
16
90°
62°
17
90°
63°
18
91°
63°
19
91°
62°
20
90°
62°
21
91°
61°
22
92°
63°
23
92°
63°
24
91°
62°
25
92°
63°
26
91°
62°
27
92°
61°
28
90°
58°
29
88°
59°
30
91°
62°
1
93°
62°
2
93°
64°
3
92°
64°
4
93°
63°
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 58° and 64°. The average high for June is 90° with an average low of 61°. 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.