S
M
T
W
T
F
S
26
91°
70°
27
84°
72°
28
81°
63°
29
81°
56°
30
88°
59°
31
77°
64°
1
70°
64°
2
77°
63°
3
81°
56°
4
84°
64°
5
79°
67°
6
80°
65°
7
85°
67°
8
82°
64°
9
75°
60°
10
84°
69°
11
81°
69°
12
83°
68°
13
78°
66°
14
80°
69°
15
78°
68°
16
83°
59°
17
79°
58°
18
80°
62°
19
77°
54°
20
74°
55°
21
75°
57°
22
76°
55°
23
78°
57°
24
79°
59°
25
80°
60°
26
79°
58°
27
76°
57°
28
78°
56°
29
76°
57°
30
80°
60°
31
71°
57°
1
70°
59°
2
72°
56°
3
70°
53°
4
71°
55°
5
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Merton
Merton's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 53° and 68°. The average high for August is 76° with an average low of 58°. 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 Merton. See also: September | October | November.
