S
M
T
W
T
F
S
26
93°
76°
27
95°
77°
28
88°
75°
29
84°
69°
30
83°
62°
31
81°
69°
1
78°
66°
2
84°
63°
3
83°
62°
4
86°
63°
5
75°
67°
6
80°
68°
7
88°
69°
8
82°
63°
9
85°
64°
10
90°
73°
11
89°
74°
12
84°
71°
13
79°
70°
14
79°
70°
15
88°
73°
16
82°
70°
17
83°
65°
18
84°
65°
19
86°
67°
20
83°
64°
21
87°
64°
22
84°
63°
23
78°
57°
24
79°
55°
25
81°
58°
26
84°
67°
27
84°
61°
28
84°
60°
29
82°
62°
30
82°
72°
31
92°
74°
1
95°
73°
2
95°
73°
3
95°
73°
4
95°
72°
5
94°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Riverside
Riverside's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Riverside. See also: September | October | November.
