S
M
T
W
T
F
S
26
80°
71°
27
80°
71°
28
79°
70°
29
80°
70°
30
80°
71°
31
81°
70°
1
78°
72°
2
80°
72°
3
80°
71°
4
81°
71°
5
80°
72°
6
80°
72°
7
81°
72°
8
80°
72°
9
80°
70°
10
83°
71°
11
84°
72°
12
84°
72°
13
83°
71°
14
84°
72°
15
85°
71°
16
85°
70°
17
84°
71°
18
84°
71°
19
83°
72°
20
85°
71°
21
85°
71°
22
84°
70°
23
84°
71°
24
83°
71°
25
84°
70°
26
84°
71°
27
83°
71°
28
84°
70°
29
84°
71°
30
83°
71°
31
84°
70°
1
84°
71°
2
83°
70°
3
84°
71°
4
83°
70°
5
84°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hilo
Hilo's August 2026 forecast shows daily high temperatures ranging from 78° to 85°, with overnight lows between 70° and 72°. The average high for August is 82° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Hilo. See also: September | October | November.
