S
M
T
W
T
F
S
26
65°
31°
27
72°
34°
28
69°
38°
29
68°
36°
30
50°
40°
1
N/A
2
52°
34°
3
50°
36°
4
63°
45°
5
68°
51°
6
53°
38°
7
52°
36°
8
48°
35°
9
53°
40°
10
55°
44°
11
59°
42°
12
60°
43°
13
58°
42°
14
57°
43°
15
63°
40°
16
61°
39°
17
61°
39°
18
63°
48°
19
64°
48°
20
69°
47°
21
72°
49°
22
69°
45°
23
62°
44°
24
63°
44°
25
64°
42°
26
65°
43°
27
65°
46°
28
64°
47°
29
68°
51°
30
70°
48°
31
71°
44°
1
66°
43°
2
65°
44°
3
67°
45°
4
65°
46°
5
66°
45°
6
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Waterbury
Waterbury's May 2026 forecast shows daily high temperatures ranging from 48° to 72°, with overnight lows between 34° and 51°. The average high for May is 62° with an average low of 43°. 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 Waterbury. See also: June | July | August.
