S
M
T
W
T
F
S
26
63°
32°
27
67°
38°
28
64°
44°
29
68°
41°
30
75°
40°
1
80°
44°
2
82°
53°
3
83°
49°
4
84°
49°
5
80°
52°
6
77°
41°
7
73°
39°
8
70°
38°
9
75°
40°
10
76°
36°
11
74°
36°
12
72°
33°
13
73°
34°
14
75°
35°
15
72°
35°
16
70°
34°
17
68°
34°
18
66°
36°
19
65°
34°
20
58°
32°
21
59°
36°
22
59°
32°
23
63°
36°
24
70°
40°
25
71°
41°
26
63°
33°
27
62°
37°
28
66°
38°
29
67°
41°
30
71°
41°
31
72°
40°
1
74°
42°
2
74°
42°
3
65°
37°
4
64°
36°
5
73°
42°
6
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ukiah
Ukiah's May 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 32° and 42°. The average high for May is 69° with an average low of 37°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Ukiah. See also: June | July | August.
