S
M
T
W
T
F
S
26
80°
65°
27
82°
62°
28
82°
61°
29
81°
64°
30
83°
67°
31
81°
62°
1
81°
67°
2
84°
68°
3
86°
62°
4
81°
61°
5
80°
60°
6
81°
61°
7
81°
62°
8
79°
60°
9
80°
63°
10
84°
64°
11
80°
63°
12
81°
66°
13
84°
66°
14
80°
67°
15
84°
66°
16
86°
60°
17
82°
59°
18
79°
60°
19
78°
64°
20
78°
59°
21
79°
58°
22
78°
62°
23
79°
63°
24
85°
64°
25
86°
63°
26
85°
58°
27
83°
57°
28
76°
56°
29
76°
57°
30
77°
58°
31
79°
62°
1
83°
63°
2
83°
62°
3
82°
60°
4
81°
63°
5
82°
61°
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 76° to 86°, with overnight lows between 56° and 68°. The average high for August is 81° with an average low of 62°. 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.