S
M
T
W
T
F
S
26
67°
48°
27
71°
47°
28
76°
48°
29
81°
52°
30
84°
56°
1
81°
57°
2
82°
54°
3
81°
57°
4
80°
57°
5
80°
55°
6
79°
55°
7
79°
56°
8
80°
54°
9
82°
57°
10
83°
59°
11
84°
59°
12
85°
60°
13
86°
60°
14
86°
59°
15
87°
60°
16
86°
60°
17
86°
58°
18
82°
56°
19
78°
53°
20
79°
54°
21
79°
56°
22
84°
57°
23
87°
61°
24
89°
62°
25
89°
62°
26
88°
61°
27
89°
62°
28
89°
62°
29
88°
60°
30
87°
58°
31
83°
55°
1
82°
56°
2
85°
59°
3
83°
58°
4
83°
59°
5
85°
59°
6
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Yuba City
South Yuba City's May 2026 forecast shows daily high temperatures ranging from 67° to 89°, with overnight lows between 47° and 62°. The average high for May is 83° with an average low of 57°. 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 South Yuba City. See also: June | July | August.