S
M
T
W
T
F
S
26
95°
67°
27
91°
66°
28
95°
67°
29
94°
66°
30
89°
63°
31
84°
58°
1
83°
58°
2
84°
60°
3
89°
66°
4
91°
62°
5
85°
62°
6
93°
66°
7
88°
65°
8
89°
65°
9
93°
66°
10
94°
66°
11
93°
65°
12
94°
66°
13
94°
67°
14
94°
67°
15
93°
65°
16
92°
67°
17
93°
66°
18
93°
66°
19
92°
65°
20
93°
65°
21
93°
66°
22
92°
65°
23
92°
66°
24
89°
56°
25
80°
56°
26
83°
59°
27
87°
60°
28
91°
63°
29
92°
64°
30
93°
62°
31
90°
54°
1
85°
51°
2
79°
55°
3
87°
63°
4
90°
59°
5
89°
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 79° to 95°, with overnight lows between 50° and 67°. The average high for August is 90° with an average low of 63°. 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.