S
M
T
W
T
F
S
27
73°
54°
28
76°
51°
29
70°
46°
30
71°
53°
1
72°
50°
2
67°
46°
3
70°
52°
4
74°
52°
5
74°
51°
6
73°
52°
7
72°
51°
8
68°
50°
9
68°
51°
10
71°
50°
11
72°
48°
12
70°
42°
13
59°
40°
14
58°
37°
15
57°
36°
16
57°
36°
17
58°
42°
18
63°
38°
19
57°
37°
20
57°
35°
21
56°
36°
22
57°
35°
23
66°
47°
24
68°
43°
25
69°
39°
26
63°
33°
27
55°
32°
28
54°
30°
29
51°
31°
30
53°
38°
31
55°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Hillsborough
Hillsborough's October 2026 forecast shows daily high temperatures ranging from 51° to 76°, with overnight lows between 30° and 54°. The average high for October is 64° 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 Hillsborough. See also: November | December | January.