S
M
T
W
T
F
S
26
63°
32°
27
67°
38°
28
64°
44°
29
68°
41°
30
75°
40°
1
76°
45°
2
77°
39°
3
75°
39°
4
73°
42°
5
74°
39°
6
78°
38°
7
75°
40°
8
73°
38°
9
72°
36°
10
74°
35°
11
71°
37°
12
72°
37°
13
70°
38°
14
64°
33°
15
60°
33°
16
63°
36°
17
60°
36°
18
59°
34°
19
58°
36°
20
59°
35°
21
61°
36°
22
59°
32°
23
60°
33°
24
65°
36°
25
69°
39°
26
71°
41°
27
71°
41°
28
70°
40°
29
69°
41°
30
71°
42°
31
65°
40°
1
64°
38°
2
67°
40°
3
70°
42°
4
66°
40°
5
67°
42°
6
69°
42°
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 78°, with overnight lows between 32° and 45°. The average high for May is 68° with an average low of 38°. 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.
