S
M
T
W
T
F
S
31
77°
66°
1
79°
65°
2
79°
66°
3
78°
66°
4
77°
64°
5
76°
61°
6
76°
62°
7
75°
62°
8
76°
63°
9
75°
65°
10
79°
66°
11
76°
64°
12
80°
66°
13
78°
64°
14
76°
64°
15
76°
65°
16
77°
64°
17
77°
64°
18
80°
66°
19
81°
67°
20
77°
69°
21
78°
67°
22
81°
66°
23
79°
68°
24
81°
70°
25
79°
71°
26
81°
71°
27
79°
70°
28
79°
68°
29
83°
67°
30
79°
66°
1
80°
69°
2
81°
71°
3
80°
72°
4
83°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Shinjuku
Shinjuku's June 2026 forecast shows daily high temperatures ranging from 75° to 83°, with overnight lows between 61° and 73°. The average high for June is 79° 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 Shinjuku. See also: July | August | September.