S
M
T
W
T
F
S
26
84°
61°
27
84°
66°
28
72°
63°
29
79°
64°
30
79°
63°
31
82°
61°
1
80°
68°
2
78°
68°
3
76°
61°
4
81°
63°
5
83°
66°
6
82°
66°
7
83°
66°
8
82°
64°
9
80°
63°
10
79°
61°
11
77°
60°
12
73°
60°
13
73°
59°
14
75°
66°
15
72°
59°
16
71°
56°
17
77°
59°
18
71°
56°
19
71°
57°
20
74°
57°
21
70°
55°
22
71°
61°
23
76°
61°
24
74°
60°
25
72°
60°
26
76°
59°
27
76°
60°
28
69°
59°
29
76°
60°
30
75°
59°
31
76°
58°
1
69°
56°
2
66°
56°
3
67°
53°
4
67°
51°
5
71°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kirkland
Kirkland's August 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 51° and 68°. The average high for August is 75° 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 Kirkland. See also: September | October | November.