S
M
T
W
T
F
S
27
N/A
28
66°
54°
29
75°
61°
30
75°
61°
1
70°
50°
2
70°
50°
3
64°
52°
4
70°
48°
5
72°
50°
6
68°
54°
7
57°
46°
8
57°
43°
9
68°
50°
10
59°
46°
11
59°
43°
12
63°
52°
13
66°
50°
14
64°
45°
15
70°
52°
16
61°
41°
17
58°
45°
18
58°
47°
19
59°
50°
20
61°
48°
21
61°
51°
22
61°
50°
23
61°
50°
24
60°
49°
25
60°
49°
26
59°
46°
27
56°
47°
28
58°
45°
29
59°
44°
30
58°
45°
31
58°
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 56° to 70°, with overnight lows between 41° and 52°. The average high for October is 60° with an average low of 47°. 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.
