S
M
T
W
T
F
S
28
75°
55°
29
75°
55°
30
76°
56°
1
76°
60°
2
79°
63°
3
78°
58°
4
76°
58°
5
77°
63°
6
81°
64°
7
85°
66°
8
86°
65°
9
86°
65°
10
85°
64°
11
86°
65°
12
85°
64°
13
79°
60°
14
81°
64°
15
84°
64°
16
80°
59°
17
77°
57°
18
77°
57°
19
78°
61°
20
78°
57°
21
78°
58°
22
78°
58°
23
79°
63°
24
82°
64°
25
85°
65°
26
84°
65°
27
81°
56°
28
76°
63°
29
81°
63°
30
80°
61°
31
79°
55°
1
78°
56°
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 75° to 86°, with overnight lows between 55° and 66°. The average high for July is 80° with an average low of 61°. 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.
