S
M
T
W
T
F
S
26
63°
50°
27
64°
50°
28
74°
45°
29
77°
46°
30
77°
49°
1
82°
53°
2
85°
54°
3
68°
55°
4
64°
53°
5
62°
51°
6
79°
50°
7
89°
53°
8
91°
55°
9
91°
56°
10
94°
51°
11
100°
57°
12
91°
55°
13
85°
57°
14
83°
53°
15
84°
54°
16
81°
55°
17
81°
54°
18
80°
54°
19
83°
53°
20
77°
48°
21
78°
49°
22
77°
49°
23
78°
50°
24
82°
54°
25
86°
55°
26
85°
53°
27
81°
50°
28
80°
50°
29
80°
51°
30
84°
54°
31
86°
57°
1
88°
58°
2
88°
57°
3
85°
55°
4
81°
54°
5
81°
54°
6
82°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Perris
Perris's May 2026 forecast shows daily high temperatures ranging from 77° to 100°, with overnight lows between 48° and 58°. The average high for May is 84° 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 Perris. See also: June | July | August.