S
M
T
W
T
F
S
27
80°
54°
28
73°
58°
29
79°
48°
30
80°
50°
1
72°
53°
2
71°
47°
3
69°
52°
4
71°
54°
5
75°
52°
6
75°
52°
7
76°
52°
8
Hist. Avg.
72°
48°
9
Hist. Avg.
71°
48°
10
Hist. Avg.
71°
47°
11
Hist. Avg.
71°
47°
12
Hist. Avg.
70°
47°
13
Hist. Avg.
70°
46°
14
Hist. Avg.
70°
46°
15
Hist. Avg.
69°
46°
16
Hist. Avg.
69°
46°
17
Hist. Avg.
69°
45°
18
Hist. Avg.
68°
45°
19
Hist. Avg.
68°
45°
20
Hist. Avg.
68°
44°
21
Hist. Avg.
67°
44°
22
Hist. Avg.
67°
44°
23
Hist. Avg.
67°
44°
24
Hist. Avg.
66°
43°
25
Hist. Avg.
66°
43°
26
Hist. Avg.
66°
43°
27
Hist. Avg.
65°
42°
28
Hist. Avg.
65°
42°
29
Hist. Avg.
64°
42°
30
Hist. Avg.
64°
41°
31
Hist. Avg.
64°
41°
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 69° to 80°, with overnight lows between 47° and 58°. The average high for October is 75° with an average low of 52°. 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.
