S
M
T
W
T
F
S
26
69°
54°
27
72°
52°
28
73°
53°
29
74°
54°
30
74°
56°
31
76°
57°
1
75°
55°
2
72°
55°
3
71°
56°
4
74°
57°
5
75°
56°
6
72°
56°
7
71°
55°
8
70°
55°
9
73°
56°
10
70°
52°
11
70°
52°
12
72°
54°
13
74°
53°
14
71°
54°
15
74°
53°
16
74°
54°
17
73°
52°
18
74°
52°
19
75°
54°
20
75°
56°
21
74°
55°
22
74°
55°
23
73°
54°
24
74°
55°
25
74°
55°
26
73°
54°
27
73°
55°
28
74°
53°
29
69°
52°
30
70°
51°
31
69°
53°
1
68°
53°
2
72°
52°
3
70°
53°
4
71°
52°
5
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Merstham
Merstham's August 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 51° and 57°. The average high for August is 72° 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 Merstham. See also: September | October | November.
