S
M
T
W
T
F
S
26
65°
53°
27
66°
53°
28
74°
49°
29
75°
51°
30
75°
54°
1
78°
57°
2
76°
55°
3
67°
57°
4
67°
53°
5
65°
54°
6
75°
51°
7
79°
54°
8
78°
58°
9
81°
59°
10
83°
59°
11
88°
57°
12
71°
57°
13
75°
57°
14
74°
54°
15
71°
58°
16
72°
61°
17
67°
60°
18
79°
59°
19
86°
53°
20
87°
60°
21
82°
58°
22
76°
59°
23
77°
57°
24
78°
58°
25
77°
58°
26
74°
57°
27
72°
55°
28
74°
54°
29
77°
58°
30
78°
60°
31
83°
59°
1
86°
63°
2
85°
61°
3
84°
62°
4
83°
63°
5
82°
62°
6
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Covina
Covina's May 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 54° and 63°. The average high for May is 80° with an average low of 59°. 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 Covina. See also: June | July | August.