S
M
T
W
T
F
S
27
69°
55°
28
68°
54°
29
67°
51°
30
67°
52°
1
74°
55°
2
73°
53°
3
72°
51°
4
72°
50°
5
70°
45°
6
65°
53°
7
Hist. Avg.
69°
45°
8
Hist. Avg.
69°
45°
9
Hist. Avg.
68°
44°
10
Hist. Avg.
68°
44°
11
Hist. Avg.
67°
44°
12
Hist. Avg.
67°
44°
13
Hist. Avg.
66°
43°
14
Hist. Avg.
66°
43°
15
Hist. Avg.
65°
43°
16
Hist. Avg.
65°
43°
17
Hist. Avg.
64°
42°
18
Hist. Avg.
64°
42°
19
Hist. Avg.
63°
42°
20
Hist. Avg.
63°
42°
21
Hist. Avg.
62°
42°
22
Hist. Avg.
62°
42°
23
Hist. Avg.
61°
41°
24
Hist. Avg.
61°
41°
25
Hist. Avg.
60°
41°
26
Hist. Avg.
60°
41°
27
Hist. Avg.
60°
41°
28
Hist. Avg.
59°
40°
29
Hist. Avg.
59°
40°
30
Hist. Avg.
58°
40°
31
Hist. Avg.
58°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in West Haven-Sylvan
West Haven-Sylvan's October 2026 forecast shows daily high temperatures ranging from 65° to 74°, with overnight lows between 45° and 55°. The average high for October is 70° with an average low of 52°. 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 West Haven-Sylvan. See also: November | December | January.
