S
M
T
W
T
F
S
26
80°
70°
27
80°
69°
28
81°
69°
29
80°
68°
30
79°
69°
31
79°
69°
1
80°
71°
2
80°
71°
3
81°
70°
4
80°
71°
5
80°
71°
6
82°
72°
7
83°
72°
8
84°
72°
9
84°
70°
10
83°
71°
11
84°
72°
12
83°
71°
13
84°
72°
14
84°
71°
15
83°
71°
16
83°
70°
17
84°
71°
18
84°
71°
19
83°
70°
20
84°
72°
21
84°
72°
22
83°
71°
23
84°
71°
24
84°
70°
25
83°
71°
26
84°
71°
27
84°
72°
28
83°
71°
29
84°
70°
30
83°
71°
31
84°
72°
1
85°
71°
2
85°
71°
3
84°
70°
4
84°
71°
5
83°
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 79° to 85°, with overnight lows between 68° and 72°. The average high for August is 83° 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.
