S
M
T
W
T
F
S
26
69°
59°
27
70°
58°
28
71°
59°
29
70°
58°
30
73°
57°
31
72°
57°
1
74°
57°
2
80°
57°
3
78°
56°
4
73°
57°
5
72°
58°
6
72°
57°
7
68°
57°
8
67°
58°
9
71°
57°
10
73°
57°
11
76°
57°
12
74°
57°
13
71°
60°
14
70°
59°
15
69°
58°
16
70°
58°
17
72°
57°
18
70°
57°
19
68°
57°
20
69°
56°
21
68°
58°
22
69°
59°
23
77°
57°
24
73°
58°
25
68°
58°
26
77°
55°
27
73°
58°
28
65°
57°
29
71°
56°
30
71°
58°
31
67°
58°
1
71°
61°
2
73°
62°
3
72°
60°
4
72°
58°
5
74°
58°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.