S
M
T
W
T
F
S
26
54°
40°
27
66°
40°
28
64°
41°
29
62°
45°
30
58°
46°
1
64°
42°
2
59°
46°
3
58°
42°
4
71°
48°
5
77°
51°
6
66°
53°
7
62°
46°
8
62°
46°
9
60°
49°
10
70°
48°
11
58°
42°
12
61°
44°
13
62°
50°
14
65°
48°
15
67°
49°
16
72°
53°
17
72°
53°
18
75°
52°
19
74°
55°
20
77°
57°
21
75°
51°
22
68°
48°
23
69°
49°
24
69°
52°
25
72°
55°
26
77°
56°
27
72°
54°
28
74°
52°
29
70°
49°
30
74°
56°
31
78°
57°
1
77°
57°
2
75°
56°
3
76°
55°
4
79°
58°
5
80°
59°
6
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Darien
Darien's May 2026 forecast shows daily high temperatures ranging from 58° to 80°, with overnight lows between 42° and 59°. The average high for May is 71° 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 May weather will actually feel in Darien. See also: June | July | August.
