S
M
T
W
T
F
S
26
85°
55°
27
85°
63°
28
81°
63°
29
71°
59°
30
67°
49°
1
65°
43°
2
66°
40°
3
70°
54°
4
80°
60°
5
78°
61°
6
67°
47°
7
66°
45°
8
70°
52°
9
79°
56°
10
75°
56°
11
77°
59°
12
77°
57°
13
76°
56°
14
79°
57°
15
78°
62°
16
80°
62°
17
80°
61°
18
82°
62°
19
79°
63°
20
83°
63°
21
83°
62°
22
82°
63°
23
77°
63°
24
78°
62°
25
82°
64°
26
81°
64°
27
77°
58°
28
78°
62°
29
81°
59°
30
79°
60°
31
84°
65°
1
82°
65°
2
86°
66°
3
86°
66°
4
81°
63°
5
80°
60°
6
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Humboldt
Humboldt's May 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 40° and 66°. The average high for May is 78° with an average low of 59°. 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. See also: June | July | August.