S
M
T
W
T
F
S
28
67°
40°
29
68°
42°
30
69°
40°
1
69°
47°
2
71°
45°
3
66°
46°
4
69°
43°
5
68°
46°
6
65°
41°
7
63°
44°
8
69°
47°
9
71°
46°
10
69°
48°
11
71°
48°
12
68°
44°
13
64°
44°
14
62°
42°
15
63°
41°
16
71°
46°
17
72°
45°
18
70°
41°
19
62°
40°
20
61°
40°
21
63°
41°
22
66°
41°
23
66°
42°
24
64°
40°
25
68°
37°
26
70°
49°
27
72°
47°
28
68°
40°
29
69°
49°
30
68°
47°
31
66°
46°
1
70°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Eureka
Eureka's July 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 37° and 49°. The average high for July is 67° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Eureka. See also: August | September | October.
