S
M
T
W
T
F
S
27
66°
49°
28
66°
50°
29
66°
49°
30
66°
50°
1
67°
50°
2
67°
49°
3
66°
49°
4
66°
48°
5
65°
49°
6
65°
48°
7
64°
48°
8
64°
49°
9
62°
48°
10
63°
47°
11
62°
44°
12
59°
43°
13
57°
47°
14
62°
44°
15
61°
45°
16
56°
43°
17
58°
45°
18
56°
42°
19
56°
45°
20
57°
40°
21
55°
45°
22
57°
47°
23
59°
46°
24
60°
43°
25
59°
44°
26
58°
44°
27
57°
45°
28
58°
45°
29
58°
42°
30
57°
43°
31
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Chelmsford
Chelmsford's October 2026 forecast shows daily high temperatures ranging from 55° to 67°, with overnight lows between 40° and 50°. The average high for October is 61° with an average low of 46°. 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 Chelmsford. See also: November | December | January.
