S
M
T
W
T
F
S
31
85°
54°
1
86°
53°
2
83°
52°
3
84°
52°
4
78°
51°
5
79°
55°
6
81°
55°
7
87°
58°
8
89°
59°
9
90°
59°
10
90°
58°
11
89°
58°
12
88°
57°
13
89°
57°
14
88°
56°
15
89°
58°
16
85°
56°
17
84°
55°
18
86°
54°
19
87°
58°
20
90°
57°
21
90°
58°
22
87°
57°
23
89°
58°
24
86°
56°
25
84°
52°
26
83°
52°
27
84°
53°
28
85°
55°
29
87°
59°
30
85°
55°
1
89°
59°
2
89°
56°
3
95°
60°
4
96°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Lake Berryessa
Lake Berryessa's June 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 51° and 60°. The average high for June is 87° with an average low of 56°. 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 Lake Berryessa. See also: July | August | September.