S
M
T
W
T
F
S
26
97°
59°
27
94°
58°
28
94°
59°
29
96°
60°
30
97°
60°
31
97°
59°
1
96°
60°
2
95°
59°
3
94°
59°
4
93°
58°
5
91°
59°
6
90°
56°
7
90°
58°
8
91°
58°
9
90°
57°
10
91°
57°
11
89°
54°
12
89°
55°
13
88°
56°
14
88°
54°
15
89°
55°
16
90°
57°
17
92°
51°
18
92°
53°
19
93°
52°
20
91°
51°
21
91°
51°
22
92°
56°
23
90°
55°
24
91°
53°
25
90°
56°
26
90°
53°
27
91°
51°
28
90°
51°
29
89°
52°
30
90°
51°
31
94°
50°
1
95°
53°
2
90°
49°
3
88°
50°
4
88°
50°
5
89°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ukiah
Ukiah's August 2026 forecast shows daily high temperatures ranging from 88° to 97°, with overnight lows between 49° and 60°. The average high for August is 92° 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 Ukiah. See also: September | October | November.
