S
M
T
W
T
F
S
28
72°
52°
29
70°
52°
30
64°
54°
1
63°
52°
2
64°
54°
3
72°
46°
4
72°
48°
5
61°
54°
6
66°
57°
7
64°
59°
8
77°
55°
9
70°
54°
10
73°
55°
11
59°
57°
12
64°
48°
13
63°
43°
14
63°
52°
15
N/A
16
60°
56°
17
63°
54°
18
63°
51°
19
64°
55°
20
64°
53°
21
65°
54°
22
66°
53°
23
68°
52°
24
68°
52°
25
66°
52°
26
66°
53°
27
65°
52°
28
63°
52°
29
63°
54°
30
64°
53°
31
63°
54°
1
63°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Charlestown
Charlestown's July 2026 forecast shows daily high temperatures ranging from 60° to 68°, with overnight lows between 51° and 56°. The average high for July is 64° with an average low of 53°. 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.