S
M
T
W
T
F
S
31
77°
65°
1
82°
62°
2
82°
55°
3
82°
59°
4
86°
62°
5
85°
66°
6
87°
69°
7
88°
70°
8
85°
67°
9
84°
66°
10
84°
65°
11
85°
68°
12
84°
64°
13
85°
65°
14
84°
63°
15
86°
61°
16
79°
60°
17
78°
60°
18
79°
64°
19
80°
67°
20
80°
67°
21
82°
66°
22
84°
67°
23
82°
65°
24
85°
68°
25
86°
68°
26
88°
69°
27
86°
68°
28
84°
69°
29
83°
69°
30
84°
68°
1
81°
68°
2
83°
70°
3
87°
69°
4
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Eureka
Eureka's June 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 55° and 70°. The average high for June is 84° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Eureka. See also: July | August | September.
