S
M
T
W
T
F
S
28
84°
58°
29
87°
54°
30
85°
55°
1
96°
68°
2
96°
69°
3
94°
71°
4
89°
63°
5
86°
57°
6
79°
63°
7
72°
61°
8
88°
58°
9
92°
60°
10
86°
60°
11
84°
54°
12
84°
51°
13
90°
64°
14
97°
75°
15
93°
59°
16
89°
57°
17
85°
56°
18
79°
61°
19
80°
59°
20
85°
60°
21
84°
62°
22
82°
61°
23
85°
62°
24
84°
60°
25
86°
61°
26
85°
58°
27
80°
58°
28
78°
61°
29
80°
57°
30
78°
57°
31
78°
59°
1
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Charlestown
Charlestown's July 2026 forecast shows daily high temperatures ranging from 78° to 97°, with overnight lows between 56° and 75°. The average high for July is 84° with an average low of 60°. 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 Charlestown. See also: August | September | October.