S
M
T
W
T
F
S
26
55°
32°
27
64°
31°
28
63°
31°
29
55°
32°
30
54°
38°
1
60°
32°
2
54°
42°
3
55°
46°
4
64°
50°
5
65°
54°
6
62°
48°
7
58°
43°
8
60°
42°
9
59°
47°
10
63°
49°
11
65°
46°
12
62°
48°
13
63°
50°
14
62°
50°
15
66°
51°
16
65°
48°
17
71°
52°
18
71°
53°
19
70°
53°
20
70°
52°
21
68°
52°
22
70°
49°
23
65°
46°
24
63°
48°
25
64°
47°
26
65°
51°
27
65°
48°
28
66°
50°
29
65°
48°
30
65°
49°
31
66°
57°
1
71°
56°
2
69°
53°
3
67°
56°
4
72°
58°
5
71°
57°
6
69°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Waterville
Waterville's May 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 42° and 58°. The average high for May is 65° with an average low of 50°. 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 Waterville. See also: June | July | August.
