S
M
T
W
T
F
S
26
76°
59°
27
75°
59°
28
75°
58°
29
74°
57°
30
73°
58°
31
75°
58°
1
74°
57°
2
75°
58°
3
75°
58°
4
74°
58°
5
75°
58°
6
75°
58°
7
74°
57°
8
75°
58°
9
75°
59°
10
74°
58°
11
75°
58°
12
75°
59°
13
74°
58°
14
75°
55°
15
72°
57°
16
73°
58°
17
75°
55°
18
75°
54°
19
74°
55°
20
73°
54°
21
71°
58°
22
71°
60°
23
73°
60°
24
73°
59°
25
74°
57°
26
72°
55°
27
70°
54°
28
71°
56°
29
72°
57°
30
72°
59°
31
73°
58°
1
72°
59°
2
76°
59°
3
77°
58°
4
73°
56°
5
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hillsborough
Hillsborough's August 2026 forecast shows daily high temperatures ranging from 70° to 77°, with overnight lows between 54° and 60°. The average high for August is 74° with an average low of 57°. 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 Hillsborough. See also: September | October | November.