S
M
T
W
T
F
S
26
77°
47°
27
71°
48°
28
78°
44°
29
79°
46°
30
75°
54°
1
57°
44°
2
66°
46°
3
72°
47°
4
77°
55°
5
64°
52°
6
70°
39°
7
78°
46°
8
86°
51°
9
89°
58°
10
90°
54°
11
94°
52°
12
96°
55°
13
89°
55°
14
88°
52°
15
87°
50°
16
91°
50°
17
88°
52°
18
90°
50°
19
85°
46°
20
79°
47°
21
80°
44°
22
80°
45°
23
81°
50°
24
80°
50°
25
81°
46°
26
82°
49°
27
86°
52°
28
83°
52°
29
88°
51°
30
89°
53°
31
86°
53°
1
83°
52°
2
84°
51°
3
88°
53°
4
89°
54°
5
85°
52°
6
86°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in North Valley
North Valley's May 2026 forecast shows daily high temperatures ranging from 70° to 96°, with overnight lows between 39° and 58°. The average high for May is 85° with an average low of 50°. 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 North Valley. See also: June | July | August.