S
M
T
W
T
F
S
27
78°
62°
28
82°
62°
29
81°
61°
30
84°
61°
1
84°
60°
2
83°
61°
3
84°
60°
4
83°
59°
5
83°
59°
6
81°
58°
7
82°
60°
8
83°
60°
9
82°
59°
10
82°
59°
11
76°
58°
12
80°
59°
13
78°
59°
14
82°
58°
15
82°
57°
16
80°
56°
17
80°
48°
18
73°
47°
19
71°
47°
20
71°
48°
21
72°
50°
22
75°
54°
23
77°
48°
24
77°
44°
25
69°
45°
26
68°
51°
27
69°
52°
28
72°
44°
29
76°
42°
30
66°
50°
31
72°
49°
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 84°, with overnight lows between 42° and 62°. The average high for October is 78° 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.