S
M
T
W
T
F
S
27
58°
56°
28
56°
54°
29
66°
54°
30
70°
56°
1
76°
56°
2
85°
65°
3
70°
45°
4
64°
48°
5
70°
41°
6
60°
37°
7
65°
51°
8
74°
48°
9
68°
47°
10
65°
41°
11
64°
48°
12
66°
49°
13
66°
45°
14
61°
43°
15
64°
43°
16
61°
44°
17
59°
40°
18
64°
45°
19
56°
39°
20
55°
35°
21
54°
36°
22
55°
44°
23
56°
43°
24
58°
43°
25
58°
41°
26
55°
42°
27
55°
39°
28
52°
38°
29
52°
41°
30
62°
42°
31
61°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Billerica
Billerica's October 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 35° and 51°. The average high for October is 61° with an average low of 43°. 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 Billerica. See also: November | December | January.