S
M
T
W
T
F
S
31
79°
56°
1
82°
61°
2
78°
53°
3
81°
57°
4
82°
62°
5
83°
65°
6
86°
68°
7
82°
62°
8
81°
63°
9
80°
64°
10
79°
63°
11
81°
63°
12
84°
62°
13
83°
60°
14
80°
59°
15
81°
58°
16
74°
55°
17
74°
56°
18
76°
58°
19
76°
60°
20
77°
61°
21
77°
60°
22
80°
63°
23
78°
61°
24
79°
63°
25
80°
64°
26
83°
64°
27
82°
63°
28
79°
59°
29
78°
60°
30
79°
58°
1
79°
59°
2
80°
62°
3
80°
64°
4
79°
58°
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 74° to 86°, with overnight lows between 53° and 68°. The average high for June is 80° 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 Greencastle. See also: July | August | September.