S
M
T
W
T
F
S
31
76°
41°
1
73°
49°
2
76°
44°
3
83°
47°
4
86°
49°
5
89°
52°
6
87°
58°
7
78°
57°
8
79°
50°
9
82°
59°
10
85°
67°
11
89°
69°
12
92°
68°
13
88°
63°
14
85°
64°
15
82°
62°
16
78°
61°
17
82°
61°
18
80°
60°
19
81°
62°
20
78°
58°
21
79°
60°
22
80°
61°
23
76°
61°
24
79°
60°
25
76°
62°
26
80°
62°
27
83°
63°
28
83°
62°
29
78°
59°
30
77°
57°
1
78°
61°
2
81°
59°
3
77°
58°
4
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Lake Hopatcong
Lake Hopatcong's June 2026 forecast shows daily high temperatures ranging from 76° to 92°, with overnight lows between 50° and 69°. The average high for June is 81° 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 June weather will actually feel in Lake Hopatcong. See also: July | August | September.