S
M
T
W
T
F
S
27
58°
46°
28
68°
45°
29
66°
41°
30
59°
37°
1
61°
43°
2
62°
44°
3
63°
43°
4
64°
44°
5
65°
42°
6
56°
43°
7
60°
45°
8
64°
42°
9
63°
40°
10
55°
36°
11
52°
33°
12
52°
38°
13
61°
41°
14
62°
41°
15
61°
40°
16
60°
40°
17
61°
31°
18
48°
29°
19
48°
30°
20
53°
40°
21
58°
40°
22
55°
37°
23
47°
35°
24
48°
37°
25
47°
36°
26
58°
30°
27
56°
25°
28
46°
25°
29
48°
26°
30
52°
36°
31
54°
35°
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 46° to 68°, with overnight lows between 25° and 46°. The average high for October is 57° with an average low of 38°. 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.