S
M
T
W
T
F
S
26
90°
69°
27
90°
69°
28
89°
68°
29
86°
68°
30
82°
67°
31
83°
68°
1
82°
67°
2
82°
65°
3
83°
68°
4
83°
62°
5
81°
62°
6
82°
61°
7
82°
61°
8
81°
68°
9
81°
67°
10
83°
65°
11
83°
66°
12
84°
65°
13
83°
66°
14
85°
67°
15
84°
67°
16
81°
66°
17
82°
66°
18
82°
64°
19
83°
62°
20
85°
65°
21
82°
58°
22
80°
57°
23
82°
59°
24
81°
58°
25
82°
59°
26
86°
62°
27
88°
63°
28
90°
66°
29
90°
65°
30
89°
58°
31
81°
58°
1
81°
65°
2
86°
58°
3
87°
64°
4
86°
66°
5
89°
59°
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 80° to 90°, with overnight lows between 57° and 69°. The average high for August is 84° with an average low of 64°. 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.
