S
M
T
W
T
F
S
26
79°
63°
27
81°
59°
28
84°
64°
29
93°
63°
30
82°
63°
31
77°
63°
1
77°
59°
2
81°
61°
3
90°
63°
4
86°
66°
5
77°
61°
6
72°
55°
7
77°
55°
8
82°
55°
9
88°
59°
10
79°
63°
11
77°
59°
12
91°
63°
13
97°
66°
14
97°
69°
15
86°
62°
16
82°
63°
17
86°
66°
18
84°
63°
19
79°
56°
20
73°
55°
21
72°
56°
22
72°
56°
23
71°
55°
24
72°
54°
25
72°
55°
26
71°
56°
27
68°
49°
28
68°
49°
29
69°
54°
30
68°
53°
31
69°
52°
1
70°
50°
2
68°
48°
3
68°
47°
4
69°
52°
5
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Richmond upon Thames
Richmond upon Thames's August 2026 forecast shows daily high temperatures ranging from 68° to 97°, with overnight lows between 47° and 69°. The average high for August is 74° with an average low of 55°. 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 Richmond upon Thames. See also: September | October | November.