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
94°
55°
2
83°
54°
3
86°
53°
4
91°
53°
5
97°
62°
6
99°
65°
7
98°
67°
8
100°
66°
9
95°
65°
10
97°
65°
11
95°
66°
12
96°
65°
13
95°
66°
14
91°
62°
15
94°
68°
16
92°
65°
17
93°
66°
18
94°
67°
19
94°
67°
20
93°
66°
21
88°
64°
22
86°
63°
23
88°
65°
24
84°
62°
25
82°
60°
26
90°
64°
27
92°
65°
28
91°
65°
29
90°
64°
30
84°
62°
31
85°
63°
1
80°
58°
2
79°
56°
3
79°
59°
4
84°
62°
5
84°
61°
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 79° to 100°, with overnight lows between 53° and 68°. 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 Kennewick. See also: September | October | November.
