S
M
T
W
T
F
S
28
80°
71°
29
90°
72°
30
94°
72°
1
99°
74°
2
103°
82°
3
103°
85°
4
104°
73°
5
95°
73°
6
86°
73°
7
82°
68°
8
81°
70°
9
84°
71°
10
88°
68°
11
83°
67°
12
83°
67°
13
88°
68°
14
89°
70°
15
94°
73°
16
93°
70°
17
90°
70°
18
84°
71°
19
86°
70°
20
84°
69°
21
81°
66°
22
81°
67°
23
82°
66°
24
82°
69°
25
83°
67°
26
83°
71°
27
85°
72°
28
88°
72°
29
86°
71°
30
88°
72°
31
87°
72°
1
88°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dorchester
Dorchester's July 2026 forecast shows daily high temperatures ranging from 81° to 94°, with overnight lows between 66° and 73°. The average high for July is 86° with an average low of 70°. 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 Dorchester. See also: August | September | October.
