S
M
T
W
T
F
S
26
77°
63°
27
79°
65°
28
78°
62°
29
80°
62°
30
81°
65°
31
78°
59°
1
79°
64°
2
81°
64°
3
80°
58°
4
82°
57°
5
77°
58°
6
77°
58°
7
80°
57°
8
80°
58°
9
78°
59°
10
81°
62°
11
81°
58°
12
80°
59°
13
80°
63°
14
82°
64°
15
78°
62°
16
83°
56°
17
80°
55°
18
75°
56°
19
76°
56°
20
75°
57°
21
74°
55°
22
73°
60°
23
77°
63°
24
79°
62°
25
82°
54°
26
82°
52°
27
75°
53°
28
72°
53°
29
72°
54°
30
73°
56°
31
73°
60°
1
80°
61°
2
79°
58°
3
78°
54°
4
78°
58°
5
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chelsea
Chelsea's August 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 52° and 65°. The average high for August is 78° with an average low of 59°. 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 Chelsea. See also: September | October | November.
