S
M
T
W
T
F
S
28
84°
66°
29
86°
65°
30
86°
58°
1
82°
58°
2
78°
57°
3
79°
56°
4
80°
58°
5
81°
58°
6
81°
60°
7
83°
64°
8
85°
61°
9
83°
64°
10
82°
65°
11
82°
65°
12
84°
64°
13
84°
60°
14
83°
61°
15
83°
64°
16
80°
64°
17
81°
63°
18
82°
65°
19
82°
65°
20
83°
64°
21
85°
64°
22
86°
65°
23
87°
64°
24
84°
63°
25
84°
57°
26
79°
56°
27
78°
57°
28
77°
57°
29
78°
58°
30
78°
56°
31
79°
56°
1
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Greencastle
Greencastle's July 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 56° and 66°. The average high for July is 82° 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 July weather will actually feel in Greencastle. See also: August | September | October.