S
M
T
W
T
F
S
28
88°
70°
29
89°
68°
30
91°
63°
1
87°
63°
2
84°
62°
3
83°
61°
4
84°
62°
5
84°
63°
6
86°
64°
7
88°
68°
8
88°
67°
9
89°
70°
10
88°
70°
11
88°
69°
12
91°
68°
13
91°
70°
14
92°
71°
15
92°
69°
16
91°
67°
17
87°
68°
18
88°
71°
19
92°
71°
20
91°
70°
21
92°
72°
22
93°
70°
23
92°
66°
24
88°
70°
25
92°
64°
26
85°
64°
27
84°
65°
28
84°
64°
29
83°
63°
30
84°
63°
31
84°
64°
1
85°
65°
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 83° to 93°, with overnight lows between 61° and 72°. The average high for July is 88° with an average low of 67°. 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.
