S
M
T
W
T
F
S
26
57°
44°
27
60°
47°
28
59°
49°
29
58°
48°
30
61°
49°
1
62°
48°
2
59°
49°
3
62°
50°
4
62°
49°
5
56°
45°
6
54°
43°
7
54°
43°
8
55°
44°
9
56°
45°
10
56°
45°
11
60°
49°
12
62°
48°
13
60°
49°
14
57°
46°
15
56°
44°
16
56°
47°
17
58°
49°
18
57°
47°
19
57°
48°
20
58°
48°
21
57°
46°
22
56°
48°
23
58°
45°
24
57°
46°
25
56°
47°
26
58°
48°
27
56°
47°
28
57°
51°
29
59°
49°
30
57°
50°
31
61°
50°
1
64°
47°
2
61°
49°
3
57°
45°
4
57°
48°
5
58°
50°
6
60°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arcata
Arcata's May 2026 forecast shows daily high temperatures ranging from 54° to 64°, with overnight lows between 43° and 54°. The average high for May is 58° with an average low of 47°. 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 Arcata. See also: June | July | August.
