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
63°
59°
7
59°
50°
8
N/A
9
62°
49°
10
59°
45°
11
56°
53°
12
64°
60°
13
64°
53°
14
61°
50°
15
60°
51°
16
59°
50°
17
60°
50°
18
60°
51°
19
59°
50°
20
58°
51°
21
58°
50°
22
57°
49°
23
57°
48°
24
54°
46°
25
57°
48°
26
54°
47°
27
57°
49°
28
56°
46°
29
53°
46°
30
52°
47°
31
55°
48°
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 64°, with overnight lows between 45° and 60°. 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.
