S
M
T
W
T
F
S
26
57°
42°
27
58°
43°
28
59°
42°
29
62°
45°
30
58°
41°
1
59°
45°
2
59°
44°
3
58°
44°
4
58°
42°
5
57°
41°
6
59°
43°
7
62°
46°
8
66°
48°
9
67°
49°
10
67°
50°
11
66°
50°
12
67°
49°
13
67°
49°
14
68°
50°
15
68°
50°
16
62°
46°
17
63°
48°
18
68°
50°
19
68°
50°
20
62°
49°
21
61°
47°
22
62°
51°
23
62°
48°
24
61°
44°
25
61°
45°
26
66°
49°
27
70°
52°
28
71°
51°
29
64°
49°
30
63°
45°
31
64°
51°
1
63°
52°
2
67°
53°
3
71°
52°
4
72°
54°
5
72°
55°
6
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Humboldt Redwoods State Park
Humboldt Redwoods State Park's May 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 41° and 55°. The average high for May is 64° with an average low of 48°. 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 Humboldt Redwoods State Park. See also: June | July | August.