S
M
T
W
T
F
S
31
79°
56°
1
82°
61°
2
78°
56°
3
83°
54°
4
85°
55°
5
84°
64°
6
88°
71°
7
88°
67°
8
83°
71°
9
89°
72°
10
90°
72°
11
88°
67°
12
81°
66°
13
81°
61°
14
75°
57°
15
74°
56°
16
76°
54°
17
74°
56°
18
74°
62°
19
79°
56°
20
81°
64°
21
77°
58°
22
71°
62°
23
77°
55°
24
81°
54°
25
80°
65°
26
73°
67°
27
82°
69°
28
89°
71°
29
90°
76°
30
92°
77°
1
93°
75°
2
94°
73°
3
94°
70°
4
88°
72°
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 88° to 94°, with overnight lows between 70° and 72°. The average high for June is 91° with an average low of 71°. 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.