S
M
T
W
T
F
S
26
88°
70°
27
88°
69°
28
87°
69°
29
88°
70°
30
89°
70°
31
88°
69°
1
87°
69°
2
88°
70°
3
88°
69°
4
87°
68°
5
88°
69°
6
88°
69°
7
87°
70°
8
88°
70°
9
88°
69°
10
89°
69°
11
88°
66°
12
83°
63°
13
82°
63°
14
83°
64°
15
86°
68°
16
88°
69°
17
86°
63°
18
84°
63°
19
85°
67°
20
84°
69°
21
88°
68°
22
87°
67°
23
87°
66°
24
88°
64°
25
85°
64°
26
85°
63°
27
86°
63°
28
85°
64°
29
85°
63°
30
86°
63°
31
85°
64°
1
85°
62°
2
84°
62°
3
83°
63°
4
83°
63°
5
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Whittier
South Whittier's August 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 62° and 70°. The average high for August is 86° with an average low of 66°. 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 South Whittier. See also: September | October | November.