S
M
T
W
T
F
S
26
74°
45°
27
75°
46°
28
75°
46°
29
71°
47°
30
70°
45°
31
75°
48°
1
74°
47°
2
75°
48°
3
76°
48°
4
75°
47°
5
76°
48°
6
76°
49°
7
77°
49°
8
77°
48°
9
67°
43°
10
65°
43°
11
66°
41°
12
66°
42°
13
67°
43°
14
70°
46°
15
72°
44°
16
69°
42°
17
66°
38°
18
69°
38°
19
72°
41°
20
75°
40°
21
74°
41°
22
73°
45°
23
75°
43°
24
66°
46°
25
72°
40°
26
65°
34°
27
64°
36°
28
64°
37°
29
65°
39°
30
62°
35°
31
64°
40°
1
67°
43°
2
72°
40°
3
74°
44°
4
72°
35°
5
63°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Northwest Yakima
Northwest Yakima's August 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 34° and 49°. The average high for August is 71° with an average low of 43°. 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 Northwest Yakima. See also: September | October | November.
