S
M
T
W
T
F
S
26
80°
61°
27
81°
60°
28
79°
60°
29
80°
63°
30
81°
63°
31
81°
61°
1
83°
61°
2
85°
62°
3
83°
62°
4
81°
61°
5
83°
65°
6
84°
60°
7
80°
59°
8
79°
58°
9
80°
60°
10
80°
61°
11
81°
60°
12
80°
59°
13
83°
60°
14
84°
65°
15
85°
63°
16
85°
64°
17
84°
63°
18
84°
63°
19
80°
62°
20
79°
63°
21
83°
63°
22
79°
62°
23
84°
62°
24
84°
61°
25
85°
63°
26
85°
63°
27
84°
62°
28
85°
62°
29
84°
60°
30
83°
61°
31
83°
61°
1
82°
59°
2
82°
58°
3
81°
59°
4
82°
62°
5
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Whittier
Whittier's August 2026 forecast shows daily high temperatures ranging from 79° to 85°, with overnight lows between 58° and 65°. The average high for August is 82° with an average low of 61°. 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 Whittier. See also: September | October | November.