S
M
T
W
T
F
S
27
60°
52°
28
61°
49°
29
64°
48°
30
62°
54°
1
61°
52°
2
61°
50°
3
58°
51°
4
57°
50°
5
58°
51°
6
60°
50°
7
60°
50°
8
60°
50°
9
61°
50°
10
58°
48°
11
57°
40°
12
60°
39°
13
62°
40°
14
62°
45°
15
73°
44°
16
64°
47°
17
61°
50°
18
55°
47°
19
55°
46°
20
57°
44°
21
58°
45°
22
57°
46°
23
58°
43°
24
59°
43°
25
62°
47°
26
58°
45°
27
62°
46°
28
63°
49°
29
63°
48°
30
63°
49°
31
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Arcata
Arcata's October 2026 forecast shows daily high temperatures ranging from 55° to 73°, with overnight lows between 43° and 50°. The average high for October is 61° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Arcata. See also: November | December | January.
