S
M
T
W
T
F
S
26
52°
40°
27
56°
45°
28
56°
43°
29
57°
40°
30
54°
41°
1
50°
38°
2
49°
36°
3
53°
38°
4
52°
41°
5
54°
42°
6
55°
41°
7
58°
39°
8
55°
36°
9
56°
38°
10
56°
36°
11
57°
43°
12
57°
45°
13
58°
48°
14
63°
46°
15
59°
43°
16
58°
42°
17
58°
41°
18
59°
41°
19
59°
40°
20
60°
41°
21
61°
42°
22
62°
49°
23
63°
48°
24
67°
49°
25
62°
45°
26
62°
45°
27
65°
48°
28
67°
52°
29
66°
52°
30
64°
53°
31
65°
53°
1
65°
52°
2
69°
52°
3
71°
54°
4
73°
54°
5
71°
45°
6
69°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Waterdown
Waterdown's May 2026 forecast shows daily high temperatures ranging from 49° to 73°, with overnight lows between 36° and 55°. The average high for May is 60° with an average low of 45°. 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 Waterdown. See also: June | July | August.
