S
M
T
W
T
F
S
27
85°
56°
28
85°
58°
29
86°
54°
30
92°
57°
1
92°
66°
2
92°
68°
3
90°
71°
4
77°
72°
5
83°
69°
6
83°
65°
7
83°
59°
8
87°
64°
9
78°
63°
10
72°
61°
11
76°
56°
12
90°
57°
13
87°
60°
14
85°
62°
15
80°
60°
16
81°
58°
17
76°
53°
18
70°
52°
19
75°
54°
20
74°
51°
21
75°
50°
22
71°
53°
23
68°
49°
24
68°
49°
25
67°
52°
26
72°
53°
27
74°
51°
28
70°
48°
29
66°
47°
30
66°
51°
31
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Chelsea
Chelsea's October 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 47° and 64°. The average high for October is 75° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Chelsea. See also: November | December | January.