S
M
T
W
T
F
S
27
66°
48°
28
N/A
29
70°
52°
30
66°
59°
1
64°
48°
2
66°
61°
3
64°
41°
4
63°
37°
5
63°
59°
6
N/A
7
58°
46°
8
58°
54°
9
62°
49°
10
59°
42°
11
59°
50°
12
62°
56°
13
63°
55°
14
61°
51°
15
59°
50°
16
60°
50°
17
59°
48°
18
60°
49°
19
60°
50°
20
60°
49°
21
59°
47°
22
57°
45°
23
55°
45°
24
57°
50°
25
59°
50°
26
59°
48°
27
55°
48°
28
56°
47°
29
57°
45°
30
52°
44°
31
54°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Carmarthen
Carmarthen's October 2026 forecast shows daily high temperatures ranging from 52° to 63°, with overnight lows between 42° and 56°. The average high for October is 58° with an average low of 49°. 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 Carmarthen. See also: November | December | January.
