S
M
T
W
T
F
S
28
85°
63°
29
78°
60°
30
79°
60°
1
79°
61°
2
81°
65°
3
81°
63°
4
82°
67°
5
83°
67°
6
86°
68°
7
89°
69°
8
89°
69°
9
88°
68°
10
89°
69°
11
89°
69°
12
88°
68°
13
84°
66°
14
85°
67°
15
87°
68°
16
84°
63°
17
81°
61°
18
80°
62°
19
80°
61°
20
81°
61°
21
80°
62°
22
81°
62°
23
83°
65°
24
87°
67°
25
88°
68°
26
87°
67°
27
82°
62°
28
83°
64°
29
85°
67°
30
84°
61°
31
84°
60°
1
83°
61°
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 78° to 89°, with overnight lows between 60° and 69°. The average high for July is 84° with an average low of 65°. 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.
