S
M
T
W
T
F
S
26
84°
66°
27
80°
63°
28
79°
60°
29
79°
64°
30
83°
67°
31
85°
66°
1
84°
65°
2
81°
64°
3
86°
59°
4
81°
58°
5
80°
60°
6
81°
59°
7
80°
58°
8
79°
57°
9
79°
57°
10
80°
62°
11
82°
65°
12
84°
64°
13
85°
57°
14
79°
56°
15
79°
58°
16
80°
60°
17
78°
57°
18
78°
57°
19
79°
56°
20
81°
57°
21
81°
61°
22
83°
63°
23
85°
64°
24
86°
64°
25
85°
63°
26
86°
60°
27
84°
61°
28
83°
63°
29
83°
59°
30
81°
54°
31
77°
52°
1
74°
54°
2
75°
53°
3
75°
54°
4
76°
53°
5
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Richland
Richland's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 52° and 67°. The average high for August is 81° with an average low of 60°. 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 Richland. See also: September | October | November.