S
M
T
W
T
F
S
27
N/A
28
N/A
29
76°
47°
30
65°
59°
1
65°
56°
2
64°
42°
3
67°
41°
4
69°
49°
5
66°
44°
6
74°
49°
7
74°
45°
8
66°
40°
9
68°
55°
10
79°
55°
11
74°
54°
12
69°
49°
13
56°
40°
14
53°
41°
15
58°
39°
16
56°
42°
17
55°
42°
18
59°
43°
19
57°
41°
20
58°
38°
21
54°
41°
22
57°
40°
23
50°
37°
24
57°
42°
25
60°
42°
26
57°
38°
27
58°
33°
28
48°
30°
29
48°
39°
30
53°
37°
31
58°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Merton
Merton's October 2026 forecast shows daily high temperatures ranging from 48° to 79°, with overnight lows between 30° and 55°. The average high for October is 59° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Merton. See also: November | December | January.