S
M
T
W
T
F
S
27
83°
68°
28
82°
69°
29
81°
70°
30
82°
70°
1
83°
69°
2
83°
71°
3
84°
72°
4
85°
72°
5
85°
71°
6
84°
71°
7
85°
70°
8
85°
71°
9
84°
71°
10
84°
70°
11
83°
69°
12
82°
70°
13
83°
69°
14
82°
70°
15
83°
71°
16
84°
70°
17
84°
71°
18
83°
70°
19
84°
70°
20
83°
69°
21
83°
70°
22
82°
70°
23
83°
69°
24
83°
66°
25
82°
69°
26
82°
69°
27
81°
70°
28
82°
70°
29
82°
69°
30
83°
70°
31
83°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Hilo
Hilo's October 2026 forecast shows daily high temperatures ranging from 81° to 85°, with overnight lows between 66° and 72°. The average high for October is 83° with an average low of 70°. 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 Hilo. See also: November | December | January.