S
M
T
W
T
F
S
31
74°
57°
1
71°
56°
2
78°
56°
3
83°
64°
4
89°
69°
5
84°
69°
6
80°
63°
7
76°
65°
8
81°
68°
9
80°
67°
10
80°
66°
11
84°
68°
12
85°
66°
13
82°
65°
14
81°
66°
15
80°
62°
16
73°
58°
17
74°
58°
18
76°
64°
19
79°
63°
20
80°
66°
21
78°
64°
22
80°
68°
23
82°
67°
24
83°
66°
25
80°
68°
26
86°
69°
27
85°
64°
28
78°
62°
29
79°
63°
30
80°
64°
1
84°
69°
2
86°
70°
3
85°
70°
4
81°
64°
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 73° to 89°, with overnight lows between 56° and 70°. The average high for June is 81° with an average low of 65°. 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.