S
M
T
W
T
F
S
26
52°
45°
27
72°
48°
28
68°
52°
29
55°
45°
30
55°
43°
1
48°
38°
2
49°
37°
3
58°
48°
4
70°
55°
5
63°
46°
6
53°
43°
7
53°
38°
8
55°
42°
9
62°
46°
10
59°
44°
11
63°
46°
12
62°
48°
13
63°
49°
14
64°
51°
15
66°
50°
16
63°
48°
17
65°
55°
18
73°
56°
19
72°
57°
20
71°
57°
21
75°
58°
22
75°
58°
23
74°
55°
24
68°
50°
25
67°
53°
26
70°
59°
27
76°
59°
28
72°
58°
29
71°
56°
30
69°
54°
31
74°
54°
1
69°
53°
2
70°
59°
3
70°
53°
4
70°
52°
5
70°
53°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Norwalk
Norwalk's May 2026 forecast shows daily high temperatures ranging from 48° to 76°, with overnight lows between 37° and 59°. The average high for May is 66° with an average low of 51°. 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 Norwalk. See also: June | July | August.
