S
M
T
W
T
F
S
26
93°
70°
27
93°
70°
28
92°
71°
29
92°
71°
30
93°
72°
31
96°
71°
1
96°
73°
2
95°
75°
3
93°
76°
4
94°
73°
5
93°
71°
6
95°
72°
7
97°
73°
8
97°
73°
9
96°
72°
10
98°
74°
11
98°
72°
12
97°
73°
13
97°
72°
14
95°
71°
15
96°
70°
16
95°
73°
17
96°
74°
18
97°
73°
19
97°
74°
20
96°
75°
21
96°
72°
22
95°
72°
23
94°
71°
24
95°
72°
25
94°
71°
26
96°
73°
27
93°
72°
28
93°
70°
29
93°
71°
30
Hist. Avg.
94°
72°
31
Hist. Avg.
93°
72°
1
Hist. Avg.
93°
72°
2
Hist. Avg.
93°
71°
3
Hist. Avg.
93°
71°
4
Hist. Avg.
92°
71°
5
Hist. Avg.
92°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Riverside
Riverside's August 2026 forecast shows daily high temperatures ranging from 92° to 98°, with overnight lows between 70° and 76°. The average high for August is 95° 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 August weather will actually feel in Riverside. See also: September | October | November.
