S
M
T
W
T
F
S
26
89°
66°
27
90°
67°
28
91°
68°
29
91°
68°
30
92°
69°
31
94°
71°
1
95°
72°
2
95°
72°
3
94°
71°
4
93°
70°
5
93°
69°
6
91°
68°
7
92°
70°
8
93°
70°
9
92°
71°
10
92°
69°
11
92°
65°
12
92°
65°
13
91°
66°
14
90°
71°
15
89°
70°
16
92°
71°
17
94°
71°
18
95°
70°
19
92°
71°
20
94°
70°
21
94°
70°
22
93°
69°
23
94°
69°
24
93°
68°
25
91°
70°
26
91°
69°
27
92°
69°
28
91°
65°
29
88°
64°
30
87°
66°
31
87°
63°
1
88°
63°
2
89°
62°
3
87°
61°
4
85°
62°
5
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lake Riverside
Lake Riverside's August 2026 forecast shows daily high temperatures ranging from 84° to 95°, with overnight lows between 61° and 72°. The average high for August is 91° with an average low of 68°. 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 Lake Riverside. See also: September | October | November.
