S
M
T
W
T
F
S
26
63°
50°
27
68°
46°
28
75°
45°
29
79°
46°
30
79°
46°
1
73°
48°
2
64°
50°
3
67°
51°
4
65°
56°
5
67°
53°
6
74°
52°
7
73°
49°
8
80°
49°
9
83°
49°
10
84°
50°
11
83°
51°
12
87°
50°
13
88°
49°
14
81°
51°
15
79°
52°
16
85°
55°
17
76°
52°
18
75°
51°
19
76°
52°
20
77°
52°
21
75°
50°
22
74°
51°
23
76°
52°
24
77°
52°
25
77°
51°
26
76°
50°
27
70°
51°
28
70°
50°
29
71°
51°
30
71°
52°
31
72°
53°
1
74°
53°
2
77°
52°
3
75°
52°
4
72°
51°
5
72°
51°
6
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sonoma Raceway
Sonoma Raceway's May 2026 forecast shows daily high temperatures ranging from 65° to 88°, with overnight lows between 49° and 56°. The average high for May is 76° with an average low of 51°. 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 Raceway. See also: June | July | August.