S
M
T
W
T
F
S
31
93°
75°
1
92°
77°
2
92°
76°
3
90°
77°
4
90°
78°
5
92°
77°
6
92°
79°
7
92°
80°
8
93°
80°
9
94°
79°
10
93°
78°
11
92°
79°
12
95°
78°
13
95°
80°
14
94°
79°
15
91°
79°
16
92°
78°
17
89°
78°
18
90°
77°
19
90°
77°
20
91°
79°
21
91°
78°
22
92°
78°
23
91°
77°
24
90°
77°
25
90°
78°
26
91°
79°
27
92°
79°
28
91°
80°
29
91°
80°
30
92°
79°
1
91°
78°
2
91°
78°
3
92°
79°
4
91°
79°
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 89° to 95°, with overnight lows between 76° and 80°. The average high for June is 92° with an average low of 78°. 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.