S
M
T
W
T
F
S
27
75°
53°
28
75°
48°
29
74°
47°
30
64°
47°
1
68°
48°
2
73°
49°
3
65°
40°
4
62°
39°
5
Hist. Avg.
67°
43°
6
Hist. Avg.
67°
43°
7
Hist. Avg.
66°
43°
8
Hist. Avg.
66°
42°
9
Hist. Avg.
65°
42°
10
Hist. Avg.
65°
42°
11
Hist. Avg.
64°
41°
12
Hist. Avg.
64°
41°
13
Hist. Avg.
63°
40°
14
Hist. Avg.
63°
40°
15
Hist. Avg.
62°
40°
16
Hist. Avg.
62°
39°
17
Hist. Avg.
61°
39°
18
Hist. Avg.
61°
39°
19
Hist. Avg.
60°
38°
20
Hist. Avg.
60°
38°
21
Hist. Avg.
59°
38°
22
Hist. Avg.
59°
37°
23
Hist. Avg.
58°
37°
24
Hist. Avg.
58°
37°
25
Hist. Avg.
57°
36°
26
Hist. Avg.
57°
36°
27
Hist. Avg.
56°
36°
28
Hist. Avg.
56°
35°
29
Hist. Avg.
55°
35°
30
Hist. Avg.
55°
35°
31
Hist. Avg.
54°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Darien
Darien's October 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 39° and 53°. The average high for October is 70° with an average low of 46°. 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 Darien. See also: November | December | January.