S
M
T
W
T
F
S
26
83°
69°
27
88°
71°
28
88°
71°
29
87°
70°
30
87°
71°
31
84°
70°
1
83°
70°
2
82°
68°
3
82°
69°
4
83°
70°
5
84°
69°
6
83°
70°
7
83°
70°
8
84°
69°
9
84°
70°
10
81°
70°
11
81°
69°
12
82°
68°
13
81°
68°
14
81°
67°
15
82°
68°
16
81°
65°
17
81°
66°
18
82°
66°
19
81°
67°
20
83°
69°
21
86°
62°
22
81°
60°
23
79°
60°
24
81°
62°
25
80°
64°
26
82°
66°
27
87°
67°
28
87°
68°
29
86°
67°
30
87°
61°
31
81°
59°
1
79°
62°
2
79°
64°
3
83°
60°
4
84°
66°
5
85°
66°
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 79° to 88°, with overnight lows between 59° and 71°. The average high for August is 83° with an average low of 67°. 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.
