S
M
T
W
T
F
S
31
84°
68°
1
87°
65°
2
84°
63°
3
81°
53°
4
83°
55°
5
87°
60°
6
87°
65°
7
78°
67°
8
83°
71°
9
80°
68°
10
84°
67°
11
82°
66°
12
86°
68°
13
86°
69°
14
88°
69°
15
86°
68°
16
88°
74°
17
85°
65°
18
90°
70°
19
91°
71°
20
93°
72°
21
90°
72°
22
91°
71°
23
91°
72°
24
90°
72°
25
90°
71°
26
92°
72°
27
91°
72°
28
90°
71°
29
90°
72°
30
85°
73°
1
86°
71°
2
85°
69°
3
85°
67°
4
86°
68°
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 78° to 93°, with overnight lows between 53° and 74°. The average high for June is 87° 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 June weather will actually feel in Riverside. See also: July | August | September.