S
M
T
W
T
F
S
26
79°
63°
27
79°
55°
28
86°
61°
29
93°
61°
30
81°
61°
31
77°
63°
1
77°
57°
2
82°
59°
3
N/A
4
86°
63°
5
80°
54°
6
74°
50°
7
79°
54°
8
80°
58°
9
81°
58°
10
78°
61°
11
80°
62°
12
83°
63°
13
77°
60°
14
77°
59°
15
73°
58°
16
74°
55°
17
72°
55°
18
70°
54°
19
68°
50°
20
68°
50°
21
67°
49°
22
68°
49°
23
68°
50°
24
72°
54°
25
73°
55°
26
73°
54°
27
72°
52°
28
72°
53°
29
71°
52°
30
72°
53°
31
73°
53°
1
71°
51°
2
68°
49°
3
65°
48°
4
66°
48°
5
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Harrow on the Hill
Harrow on the Hill's August 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 47° and 63°. The average high for August is 73° with an average low of 54°. 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 Harrow on the Hill. See also: September | October | November.
