S
M
T
W
T
F
S
26
93°
65°
27
96°
68°
28
98°
69°
29
99°
67°
30
95°
62°
31
95°
61°
1
93°
62°
2
95°
67°
3
97°
68°
4
98°
68°
5
96°
66°
6
90°
60°
7
87°
61°
8
86°
56°
9
83°
55°
10
83°
58°
11
86°
61°
12
89°
62°
13
91°
55°
14
83°
54°
15
81°
54°
16
80°
56°
17
83°
55°
18
84°
59°
19
88°
60°
20
85°
55°
21
81°
53°
22
81°
52°
23
82°
54°
24
82°
58°
25
89°
55°
26
87°
56°
27
87°
61°
28
91°
54°
29
85°
58°
30
82°
60°
31
88°
60°
1
86°
53°
2
78°
50°
3
77°
55°
4
80°
57°
5
78°
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 77° to 99°, with overnight lows between 50° and 69°. The average high for August is 87° with an average low of 59°. 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.