S
M
T
W
T
F
S
26
68°
45°
27
61°
43°
28
54°
36°
29
54°
34°
30
52°
37°
1
52°
34°
2
66°
30°
3
72°
46°
4
63°
36°
5
50°
30°
6
48°
27°
7
61°
32°
8
73°
36°
9
61°
39°
10
63°
32°
11
70°
30°
12
73°
54°
13
72°
50°
14
76°
54°
15
89°
53°
16
80°
53°
17
71°
61°
18
70°
48°
19
61°
44°
20
63°
45°
21
67°
48°
22
68°
52°
23
70°
51°
24
73°
53°
25
75°
57°
26
72°
51°
27
68°
51°
28
66°
50°
29
66°
49°
30
67°
49°
31
69°
50°
1
68°
49°
2
69°
54°
3
70°
59°
4
76°
61°
5
80°
61°
6
79°
60°
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 61° to 89°, with overnight lows between 44° and 61°. The average high for May is 71° with an average low of 53°. 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.
