S
M
T
W
T
F
S
28
83°
69°
29
82°
71°
30
84°
71°
1
82°
72°
2
82°
70°
3
82°
71°
4
83°
69°
5
83°
70°
6
82°
69°
7
84°
70°
8
83°
72°
9
85°
73°
10
86°
71°
11
85°
72°
12
86°
71°
13
84°
72°
14
81°
71°
15
80°
71°
16
81°
70°
17
80°
70°
18
80°
71°
19
81°
71°
20
80°
70°
21
80°
70°
22
81°
71°
23
80°
70°
24
78°
72°
25
80°
71°
26
80°
70°
27
81°
70°
28
80°
71°
29
81°
70°
30
80°
71°
31
80°
72°
1
81°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Hilo
Hilo's July 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 69° and 73°. The average high for July 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 July weather will actually feel in Hilo. See also: August | September | October.