S
M
T
W
T
F
S
26
91°
74°
27
93°
73°
28
93°
75°
29
92°
75°
30
92°
73°
31
90°
71°
1
93°
72°
2
87°
68°
3
83°
69°
4
86°
67°
5
91°
71°
6
91°
72°
7
92°
70°
8
90°
71°
9
91°
72°
10
91°
71°
11
91°
70°
12
90°
72°
13
92°
71°
14
91°
70°
15
87°
67°
16
86°
67°
17
92°
73°
18
93°
73°
19
93°
72°
20
94°
73°
21
93°
73°
22
92°
72°
23
92°
73°
24
91°
73°
25
91°
72°
26
92°
73°
27
92°
72°
28
90°
72°
29
92°
70°
30
91°
71°
31
91°
71°
1
90°
72°
2
92°
71°
3
91°
71°
4
88°
70°
5
89°
69°
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 83° to 94°, with overnight lows between 67° and 73°. The average high for August is 91° with an average low of 71°. 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.
