S
M
T
W
T
F
S
26
41°
33°
27
38°
27°
28
38°
26°
29
40°
29°
30
56°
28°
1
56°
36°
2
63°
43°
3
54°
41°
4
45°
39°
5
51°
43°
6
56°
45°
7
53°
43°
8
52°
38°
9
56°
38°
10
55°
39°
11
52°
45°
12
56°
46°
13
63°
46°
14
51°
31°
15
56°
31°
16
57°
37°
17
65°
43°
18
51°
39°
19
51°
38°
20
53°
39°
21
56°
38°
22
55°
40°
23
55°
41°
24
56°
41°
25
55°
40°
26
57°
40°
27
56°
41°
28
57°
41°
29
58°
40°
30
57°
41°
31
56°
40°
1
54°
42°
2
55°
41°
3
56°
42°
4
57°
42°
5
55°
41°
6
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Placentia
Placentia's May 2026 forecast shows daily high temperatures ranging from 45° to 65°, with overnight lows between 31° and 46°. The average high for May is 55° with an average low of 40°. 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 Placentia. See also: June | July | August.
