S
M
T
W
T
F
S
27
75°
52°
28
77°
52°
29
76°
50°
30
77°
50°
1
74°
49°
2
76°
50°
3
75°
51°
4
Hist. Avg.
71°
46°
5
Hist. Avg.
71°
46°
6
Hist. Avg.
70°
46°
7
Hist. Avg.
70°
46°
8
Hist. Avg.
69°
45°
9
Hist. Avg.
69°
45°
10
Hist. Avg.
68°
44°
11
Hist. Avg.
68°
44°
12
Hist. Avg.
68°
44°
13
Hist. Avg.
67°
43°
14
Hist. Avg.
67°
43°
15
Hist. Avg.
66°
43°
16
Hist. Avg.
66°
42°
17
Hist. Avg.
65°
42°
18
Hist. Avg.
65°
42°
19
Hist. Avg.
64°
41°
20
Hist. Avg.
64°
41°
21
Hist. Avg.
64°
40°
22
Hist. Avg.
63°
40°
23
Hist. Avg.
63°
40°
24
Hist. Avg.
62°
40°
25
Hist. Avg.
62°
39°
26
Hist. Avg.
61°
39°
27
Hist. Avg.
61°
38°
28
Hist. Avg.
60°
38°
29
Hist. Avg.
60°
38°
30
Hist. Avg.
60°
37°
31
Hist. Avg.
59°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Hillsboro
Hillsboro's October 2026 forecast shows daily high temperatures ranging from 74° to 77°, with overnight lows between 49° and 52°. The average high for October is 76° with an average low of 51°. 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 Hillsboro. See also: November | December | January.