S
M
T
W
T
F
S
26
67°
48°
27
72°
51°
28
71°
50°
29
76°
53°
30
76°
52°
1
79°
54°
2
78°
53°
3
77°
51°
4
77°
53°
5
71°
49°
6
72°
52°
7
73°
52°
8
73°
53°
9
74°
47°
10
73°
47°
11
73°
48°
12
75°
48°
13
76°
53°
14
74°
49°
15
73°
50°
16
73°
50°
17
75°
49°
18
76°
52°
19
77°
57°
20
78°
55°
21
78°
56°
22
76°
51°
23
76°
50°
24
77°
51°
25
82°
55°
26
86°
57°
27
85°
56°
28
83°
57°
29
80°
56°
30
86°
58°
31
88°
59°
1
81°
58°
2
82°
57°
3
88°
56°
4
86°
54°
5
84°
53°
6
83°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Roseville
Roseville's May 2026 forecast shows daily high temperatures ranging from 67° to 88°, with overnight lows between 47° and 59°. The average high for May is 78° with an average low of 53°. 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 Roseville. See also: June | July | August.