S
M
T
W
T
F
S
26
85°
63°
27
86°
68°
28
91°
69°
29
92°
69°
30
91°
66°
31
90°
66°
1
88°
61°
2
85°
59°
3
82°
58°
4
81°
58°
5
81°
59°
6
83°
60°
7
86°
61°
8
87°
62°
9
87°
62°
10
88°
64°
11
88°
62°
12
82°
60°
13
Hist. Avg.
88°
65°
14
Hist. Avg.
88°
65°
15
Hist. Avg.
88°
65°
16
Hist. Avg.
87°
64°
17
Hist. Avg.
87°
64°
18
Hist. Avg.
87°
64°
19
Hist. Avg.
87°
64°
20
Hist. Avg.
87°
64°
21
Hist. Avg.
87°
63°
22
Hist. Avg.
86°
63°
23
Hist. Avg.
86°
63°
24
Hist. Avg.
86°
62°
25
Hist. Avg.
86°
62°
26
Hist. Avg.
86°
62°
27
Hist. Avg.
86°
62°
28
Hist. Avg.
85°
61°
29
Hist. Avg.
85°
61°
30
Hist. Avg.
85°
61°
31
Hist. Avg.
85°
60°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
60°
3
Hist. Avg.
84°
59°
4
Hist. Avg.
84°
59°
5
Hist. Avg.
84°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Dorchester
Dorchester's August 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 58° and 69°. The average high for August is 86° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Dorchester. See also: September | October | November.
