S
M
T
W
T
F
S
27
66°
43°
28
71°
38°
29
64°
44°
30
71°
40°
1
68°
44°
2
67°
46°
3
73°
42°
4
70°
42°
5
59°
39°
6
58°
34°
7
56°
36°
8
55°
33°
9
55°
28°
10
52°
29°
11
52°
32°
12
55°
31°
13
55°
36°
14
53°
29°
15
51°
33°
16
52°
36°
17
55°
36°
18
50°
37°
19
58°
32°
20
53°
36°
21
59°
33°
22
57°
26°
23
46°
25°
24
47°
27°
25
46°
28°
26
Hist. Avg.
46°
26°
27
Hist. Avg.
46°
26°
28
Hist. Avg.
46°
25°
29
Hist. Avg.
45°
25°
30
Hist. Avg.
45°
25°
31
Hist. Avg.
44°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Eureka
Eureka's October 2026 forecast shows daily high temperatures ranging from 46° to 73°, with overnight lows between 25° and 46°. The average high for October is 58° with an average low of 35°. 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 Eureka. See also: November | December | January.
