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°
41°
14
77°
56°
15
88°
57°
16
80°
58°
17
74°
61°
18
70°
45°
19
61°
44°
20
61°
45°
21
61°
48°
22
68°
52°
23
75°
57°
24
71°
56°
25
73°
57°
26
75°
56°
27
73°
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 88°, with overnight lows between 44° and 61°. The average high for May is 72° with an average low of 54°. 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.
