S
M
T
W
T
F
S
27
75°
60°
28
75°
59°
29
74°
54°
30
72°
54°
1
77°
56°
2
71°
57°
3
77°
55°
4
77°
58°
5
78°
59°
6
77°
58°
7
73°
58°
8
72°
57°
9
72°
55°
10
74°
58°
11
69°
58°
12
69°
57°
13
74°
57°
14
75°
54°
15
74°
55°
16
75°
57°
17
74°
56°
18
73°
56°
19
67°
50°
20
67°
51°
21
68°
49°
22
67°
53°
23
67°
53°
24
66°
52°
25
69°
52°
26
70°
54°
27
71°
53°
28
69°
54°
29
68°
55°
30
65°
52°
31
71°
55°
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 60°. The average high for October is 72° with an average low of 55°. 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.