S
M
T
W
T
F
S
26
95°
67°
27
95°
67°
28
96°
68°
29
96°
67°
30
95°
67°
31
89°
61°
1
85°
59°
2
90°
65°
3
95°
67°
4
95°
66°
5
91°
65°
6
86°
63°
7
90°
66°
8
94°
65°
9
93°
66°
10
94°
66°
11
90°
64°
12
85°
64°
13
90°
65°
14
91°
65°
15
87°
64°
16
86°
62°
17
88°
64°
18
86°
63°
19
88°
64°
20
91°
63°
21
90°
62°
22
91°
64°
23
92°
59°
24
81°
60°
25
87°
58°
26
81°
52°
27
78°
52°
28
80°
59°
29
86°
60°
30
87°
51°
31
78°
55°
1
82°
53°
2
80°
50°
3
79°
51°
4
84°
54°
5
83°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in West Richland
West Richland's August 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 50° and 68°. The average high for August is 88° 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 West Richland. See also: September | October | November.