S
M
T
W
T
F
S
27
67°
54°
28
65°
50°
29
71°
53°
30
71°
59°
1
65°
55°
2
70°
59°
3
65°
51°
4
64°
47°
5
65°
58°
6
64°
58°
7
60°
47°
8
55°
50°
9
60°
46°
10
55°
44°
11
56°
48°
12
61°
59°
13
64°
53°
14
60°
51°
15
57°
48°
16
56°
47°
17
57°
50°
18
58°
49°
19
55°
49°
20
56°
48°
21
56°
48°
22
55°
47°
23
54°
45°
24
51°
42°
25
52°
46°
26
51°
42°
27
54°
47°
28
54°
44°
29
50°
44°
30
49°
43°
31
51°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Merthyr Tydfil/merthyr Tudful
Merthyr Tydfil/merthyr Tudful's October 2026 forecast shows daily high temperatures ranging from 49° to 64°, with overnight lows between 42° and 59°. The average high for October is 55° with an average low of 47°. 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 Merthyr Tydfil/merthyr Tudful. See also: November | December | January.