S
M
T
W
T
F
S
31
89°
66°
1
83°
66°
2
83°
59°
3
84°
53°
4
84°
59°
5
84°
59°
6
87°
62°
7
88°
67°
8
87°
73°
9
90°
76°
10
90°
73°
11
95°
76°
12
85°
66°
13
88°
73°
14
83°
64°
15
78°
63°
16
78°
61°
17
81°
67°
18
90°
71°
19
87°
69°
20
82°
68°
21
84°
67°
22
86°
68°
23
87°
65°
24
82°
62°
25
83°
69°
26
85°
68°
27
84°
64°
28
83°
62°
29
83°
65°
30
84°
67°
1
85°
68°
2
84°
68°
3
84°
69°
4
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Neptune
Neptune's June 2026 forecast shows daily high temperatures ranging from 78° to 95°, with overnight lows between 61° and 76°. The average high for June is 84° 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 June weather will actually feel in Neptune. See also: July | August | September.