S
M
T
W
T
F
S
31
85°
66°
1
89°
67°
2
83°
70°
3
83°
67°
4
86°
72°
5
88°
72°
6
89°
70°
7
80°
69°
8
87°
74°
9
90°
76°
10
93°
76°
11
96°
74°
12
93°
73°
13
86°
67°
14
89°
66°
15
84°
66°
16
81°
64°
17
97°
78°
18
90°
72°
19
88°
73°
20
89°
72°
21
83°
66°
22
83°
73°
23
91°
74°
24
92°
75°
25
93°
74°
26
89°
74°
27
85°
73°
28
86°
74°
29
84°
74°
30
86°
73°
1
87°
73°
2
86°
74°
3
86°
74°
4
85°
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 80° to 97°, with overnight lows between 64° and 78°. The average high for June is 88° with an average low of 72°. 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.