S
M
T
W
T
F
S
26
92°
61°
27
92°
51°
28
93°
66°
29
86°
55°
30
94°
56°
31
94°
54°
1
93°
58°
2
83°
52°
3
83°
49°
4
88°
48°
5
93°
47°
6
97°
50°
7
102°
54°
8
98°
55°
9
93°
54°
10
95°
54°
11
94°
53°
12
91°
60°
13
87°
58°
14
90°
57°
15
90°
61°
16
92°
59°
17
94°
58°
18
98°
64°
19
92°
61°
20
99°
53°
21
100°
57°
22
100°
71°
23
88°
59°
24
91°
52°
25
94°
55°
26
100°
56°
27
92°
61°
28
85°
51°
29
78°
56°
30
79°
48°
31
88°
53°
1
88°
64°
2
78°
59°
3
73°
53°
4
72°
53°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kennewick
Kennewick's August 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 48° and 64°. The average high for August is 79° with an average low of 55°. 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 Kennewick. See also: September | October | November.
