S
M
T
W
T
F
S
26
77°
54°
27
75°
53°
28
78°
51°
29
73°
47°
30
74°
48°
1
80°
52°
2
81°
54°
3
81°
53°
4
78°
52°
5
74°
49°
6
75°
49°
7
75°
50°
8
76°
52°
9
81°
55°
10
82°
57°
11
83°
57°
12
83°
55°
13
82°
54°
14
79°
53°
15
79°
53°
16
80°
54°
17
78°
53°
18
78°
53°
19
76°
54°
20
75°
53°
21
75°
52°
22
76°
52°
23
77°
54°
24
78°
55°
25
78°
52°
26
84°
58°
27
86°
60°
28
86°
59°
29
80°
53°
30
78°
53°
31
79°
59°
1
84°
58°
2
87°
59°
3
86°
58°
4
87°
60°
5
85°
60°
6
87°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Norco
Norco's May 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 47° and 61°. The average high for May is 80° with an average low of 54°. 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 Norco. See also: June | July | August.
