S
M
T
W
T
F
S
31
80°
58°
1
83°
51°
2
83°
50°
3
82°
48°
4
85°
67°
5
84°
67°
6
85°
66°
7
81°
69°
8
82°
67°
9
83°
67°
10
87°
70°
11
89°
68°
12
88°
67°
13
87°
68°
14
85°
65°
15
84°
61°
16
83°
61°
17
84°
60°
18
85°
64°
19
84°
65°
20
85°
65°
21
82°
59°
22
78°
58°
23
80°
66°
24
88°
68°
25
88°
65°
26
84°
63°
27
80°
64°
28
81°
65°
29
84°
67°
30
84°
67°
1
85°
66°
2
84°
67°
3
87°
67°
4
88°
68°
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 89°, with overnight lows between 58° and 70°. The average high for June 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 June weather will actually feel in Eureka. See also: July | August | September.
