S
M
T
W
T
F
S
26
83°
73°
27
84°
69°
28
84°
75°
29
87°
73°
30
87°
72°
31
84°
72°
1
84°
72°
2
81°
71°
3
84°
71°
4
86°
74°
5
86°
75°
6
85°
72°
7
85°
71°
8
83°
71°
9
84°
73°
10
86°
72°
11
85°
72°
12
87°
73°
13
85°
74°
14
83°
75°
15
83°
74°
16
86°
70°
17
85°
72°
18
86°
73°
19
88°
72°
20
86°
71°
21
87°
72°
22
83°
70°
23
80°
71°
24
80°
73°
25
80°
73°
26
80°
72°
27
80°
73°
28
82°
73°
29
81°
72°
30
80°
72°
31
80°
71°
1
81°
72°
2
80°
72°
3
82°
71°
4
80°
70°
5
81°
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 80° to 88°, with overnight lows between 70° and 75°. The average high for August is 83° with an average low of 72°. 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.
