S
M
T
W
T
F
S
26
67°
52°
27
70°
48°
28
77°
41°
29
78°
42°
30
78°
46°
1
80°
52°
2
79°
52°
3
70°
54°
4
72°
53°
5
71°
47°
6
78°
44°
7
83°
47°
8
82°
52°
9
85°
51°
10
85°
51°
11
87°
50°
12
74°
57°
13
79°
54°
14
78°
47°
15
77°
52°
16
78°
59°
17
73°
56°
18
83°
51°
19
93°
45°
20
91°
47°
21
81°
50°
22
79°
51°
23
80°
51°
24
77°
57°
25
79°
50°
26
73°
48°
27
73°
46°
28
72°
44°
29
74°
53°
30
81°
47°
31
83°
57°
1
86°
55°
2
83°
56°
3
85°
57°
4
85°
57°
5
83°
56°
6
80°
54°
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 80° to 86°, with overnight lows between 54° and 57°. The average high for May is 84° with an average low of 56°. 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.
