S
M
T
W
T
F
S
27
58°
56°
28
57°
54°
29
67°
54°
30
71°
54°
1
75°
56°
2
86°
62°
3
71°
45°
4
64°
40°
5
69°
46°
6
60°
33°
7
66°
50°
8
73°
47°
9
68°
43°
10
65°
40°
11
65°
50°
12
69°
50°
13
66°
46°
14
66°
43°
15
64°
45°
16
62°
45°
17
62°
47°
18
63°
38°
19
55°
35°
20
55°
33°
21
54°
34°
22
54°
42°
23
57°
39°
24
58°
42°
25
55°
39°
26
54°
39°
27
53°
36°
28
51°
34°
29
52°
37°
30
61°
41°
31
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Fitchburg
Fitchburg's October 2026 forecast shows daily high temperatures ranging from 51° to 73°, with overnight lows between 33° and 50°. The average high for October is 60° with an average low of 41°. 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 Fitchburg. See also: November | December | January.