S
M
T
W
T
F
S
26
64°
47°
27
69°
40°
28
62°
44°
29
62°
41°
30
61°
40°
31
60°
39°
1
58°
42°
2
59°
39°
3
63°
43°
4
67°
45°
5
68°
43°
6
Hist. Avg.
68°
47°
7
Hist. Avg.
67°
47°
8
Hist. Avg.
67°
47°
9
Hist. Avg.
67°
46°
10
Hist. Avg.
67°
46°
11
Hist. Avg.
66°
46°
12
Hist. Avg.
66°
46°
13
Hist. Avg.
66°
46°
14
Hist. Avg.
66°
45°
15
Hist. Avg.
66°
45°
16
Hist. Avg.
66°
45°
17
Hist. Avg.
65°
45°
18
Hist. Avg.
65°
44°
19
Hist. Avg.
65°
44°
20
Hist. Avg.
65°
44°
21
Hist. Avg.
64°
44°
22
Hist. Avg.
64°
43°
23
Hist. Avg.
64°
43°
24
Hist. Avg.
64°
43°
25
Hist. Avg.
63°
42°
26
Hist. Avg.
63°
42°
27
Hist. Avg.
63°
42°
28
Hist. Avg.
62°
42°
29
Hist. Avg.
62°
41°
30
Hist. Avg.
62°
41°
31
Hist. Avg.
61°
40°
1
Hist. Avg.
61°
40°
2
Hist. Avg.
60°
40°
3
Hist. Avg.
60°
40°
4
Hist. Avg.
60°
39°
5
Hist. Avg.
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Eureka
Eureka's August 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 39° and 47°. The average high for August is 63° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Eureka. See also: September | October | November.
