S
M
T
W
T
F
S
28
61°
50°
29
62°
50°
30
61°
49°
1
60°
49°
2
61°
48°
3
61°
49°
4
62°
48°
5
61°
49°
6
62°
48°
7
61°
47°
8
63°
48°
9
62°
48°
10
62°
49°
11
61°
49°
12
61°
48°
13
62°
49°
14
61°
48°
15
62°
47°
16
66°
48°
17
62°
47°
18
61°
47°
19
63°
48°
20
67°
43°
21
68°
44°
22
67°
47°
23
66°
48°
24
62°
43°
25
62°
46°
26
63°
47°
27
67°
48°
28
68°
44°
29
63°
48°
30
63°
48°
31
64°
47°
1
67°
45°
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 60° to 68°, with overnight lows between 43° and 50°. The average high for July is 63° with an average low of 47°. 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.