S
M
T
W
T
F
S
28
84°
58°
29
87°
54°
30
85°
55°
1
96°
68°
2
95°
72°
3
96°
73°
4
87°
56°
5
88°
61°
6
77°
61°
7
75°
59°
8
84°
60°
9
89°
63°
10
91°
64°
11
85°
60°
12
87°
60°
13
87°
61°
14
85°
63°
15
86°
58°
16
77°
55°
17
78°
59°
18
79°
58°
19
81°
59°
20
81°
61°
21
78°
61°
22
78°
62°
23
79°
61°
24
79°
61°
25
80°
60°
26
81°
60°
27
83°
61°
28
82°
60°
29
83°
61°
30
84°
62°
31
84°
62°
1
85°
61°
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 75° to 96°, with overnight lows between 55° and 73°. The average high for July is 83° 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 Charlestown. See also: August | September | October.