S
M
T
W
T
F
S
28
74°
56°
29
73°
56°
30
73°
55°
1
68°
54°
2
67°
53°
3
68°
51°
4
68°
50°
5
69°
56°
6
69°
54°
7
70°
53°
8
72°
56°
9
72°
55°
10
70°
52°
11
68°
53°
12
69°
55°
13
73°
57°
14
70°
56°
15
70°
57°
16
71°
55°
17
75°
58°
18
75°
58°
19
74°
57°
20
74°
58°
21
73°
58°
22
73°
57°
23
74°
58°
24
72°
56°
25
71°
56°
26
72°
58°
27
72°
53°
28
74°
53°
29
74°
55°
30
75°
56°
31
74°
55°
1
74°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dedham
Dedham's July 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 50° and 59°. The average high for July is 72° with an average low of 55°. 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 Dedham. See also: August | September | October.