S
M
T
W
T
F
S
26
59°
38°
27
70°
32°
28
65°
36°
29
63°
41°
30
56°
42°
1
63°
34°
2
58°
45°
3
57°
36°
4
70°
34°
5
78°
50°
6
67°
54°
7
61°
39°
8
58°
41°
9
61°
46°
10
69°
50°
11
60°
44°
12
64°
38°
13
67°
47°
14
65°
50°
15
64°
48°
16
77°
43°
17
87°
55°
18
88°
57°
19
93°
63°
20
88°
63°
21
63°
49°
22
65°
47°
23
53°
48°
24
57°
47°
25
76°
55°
26
80°
47°
27
83°
59°
28
74°
54°
29
74°
57°
30
66°
44°
31
70°
51°
1
69°
51°
2
74°
52°
3
77°
57°
4
81°
60°
5
80°
60°
6
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in New Canaan
New Canaan's May 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 44° and 60°. The average high for May is 75° with an average low of 55°. 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 New Canaan. See also: June | July | August.
