S
M
T
W
T
F
S
27
78°
59°
28
77°
58°
29
75°
55°
30
77°
58°
1
74°
54°
2
69°
51°
3
70°
51°
4
70°
50°
5
69°
51°
6
69°
53°
7
70°
52°
8
71°
51°
9
72°
54°
10
73°
54°
11
70°
51°
12
69°
49°
13
68°
50°
14
68°
51°
15
69°
50°
16
69°
54°
17
72°
55°
18
75°
56°
19
75°
56°
20
74°
55°
21
73°
55°
22
74°
56°
23
74°
56°
24
75°
54°
25
73°
55°
26
72°
56°
27
66°
55°
28
70°
56°
29
67°
54°
30
66°
50°
31
65°
54°
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 65° to 78°, with overnight lows between 49° and 59°. The average high for October is 71° with an average low of 54°. 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.