S
M
T
W
T
F
S
26
84°
68°
27
85°
73°
28
84°
73°
29
86°
71°
30
77°
71°
1
70°
56°
2
73°
55°
3
76°
54°
4
80°
60°
5
83°
70°
6
86°
70°
7
78°
63°
8
79°
64°
9
80°
66°
10
82°
66°
11
86°
68°
12
85°
70°
13
86°
69°
14
85°
67°
15
84°
70°
16
84°
71°
17
85°
71°
18
84°
70°
19
86°
71°
20
85°
71°
21
85°
72°
22
84°
71°
23
83°
71°
24
83°
70°
25
84°
72°
26
82°
72°
27
84°
71°
28
85°
72°
29
85°
72°
30
86°
73°
31
85°
73°
1
86°
72°
2
86°
73°
3
88°
74°
4
89°
74°
5
87°
72°
6
86°
72°
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 70° to 89°, with overnight lows between 54° and 74°. The average high for May is 83° with an average low of 69°. 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.
