S
M
T
W
T
F
S
26
86°
67°
27
91°
74°
28
82°
73°
29
73°
60°
30
63°
60°
1
63°
53°
2
78°
48°
3
82°
53°
4
81°
60°
5
88°
68°
6
68°
56°
7
72°
52°
8
76°
57°
9
91°
68°
10
85°
63°
11
79°
59°
12
84°
57°
13
91°
60°
14
90°
64°
15
86°
67°
16
88°
70°
17
89°
74°
18
91°
77°
19
87°
63°
20
80°
64°
21
79°
69°
22
87°
68°
23
82°
65°
24
90°
66°
25
87°
66°
26
89°
65°
27
82°
66°
28
88°
68°
29
92°
72°
30
90°
72°
31
92°
71°
1
91°
71°
2
93°
70°
3
88°
69°
4
86°
68°
5
87°
69°
6
89°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sonoma
Sonoma's May 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 68° and 72°. The average high for May is 90° with an average low of 70°. 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 Sonoma. See also: June | July | August.
