S
M
T
W
T
F
S
27
59°
56°
28
56°
52°
29
68°
56°
30
72°
55°
1
80°
65°
2
79°
51°
3
67°
43°
4
64°
47°
5
65°
45°
6
64°
44°
7
65°
45°
8
60°
42°
9
58°
41°
10
61°
44°
11
64°
40°
12
67°
45°
13
65°
39°
14
56°
36°
15
55°
37°
16
59°
43°
17
63°
43°
18
65°
42°
19
65°
42°
20
60°
41°
21
62°
36°
22
53°
33°
23
52°
31°
24
52°
39°
25
61°
41°
26
62°
33°
27
51°
29°
28
50°
31°
29
54°
39°
30
59°
40°
31
60°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Nashua
Nashua's October 2026 forecast shows daily high temperatures ranging from 50° to 80°, with overnight lows between 29° and 65°. The average high for October is 62° with an average low of 42°. 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 Nashua. See also: November | December | January.