S
M
T
W
T
F
S
31
64°
55°
1
66°
59°
2
64°
55°
3
63°
52°
4
61°
52°
5
59°
48°
6
59°
52°
7
62°
45°
8
61°
45°
9
61°
45°
10
59°
49°
11
61°
55°
12
69°
56°
13
64°
54°
14
68°
51°
15
67°
52°
16
67°
51°
17
66°
51°
18
66°
50°
19
67°
51°
20
63°
50°
21
64°
49°
22
63°
50°
23
63°
52°
24
64°
52°
25
64°
50°
26
65°
49°
27
63°
49°
28
64°
52°
29
65°
53°
30
65°
53°
1
66°
52°
2
65°
52°
3
64°
51°
4
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Greencastle
Greencastle's June 2026 forecast shows daily high temperatures ranging from 59° to 69°, with overnight lows between 45° and 56°. The average high for June is 64° with an average low of 51°. 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 Greencastle. See also: July | August | September.