S
M
T
W
T
F
S
27
76°
55°
28
75°
55°
29
75°
54°
30
74°
55°
1
75°
54°
2
74°
48°
3
72°
45°
4
64°
44°
5
64°
47°
6
65°
41°
7
64°
40°
8
60°
42°
9
62°
46°
10
67°
51°
11
70°
50°
12
71°
43°
13
70°
42°
14
64°
40°
15
60°
40°
16
60°
42°
17
61°
44°
18
67°
40°
19
62°
47°
20
64°
46°
21
67°
46°
22
66°
48°
23
67°
48°
24
68°
47°
25
66°
48°
26
66°
42°
27
67°
37°
28
61°
37°
29
57°
41°
30
56°
45°
31
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Gwynedd
Gwynedd's October 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 37° and 55°. The average high for October is 66° with an average low of 45°. 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 Gwynedd. See also: November | December | January.