S
M
T
W
T
F
S
26
65°
39°
27
69°
45°
28
69°
49°
29
73°
45°
30
76°
43°
1
78°
47°
2
81°
53°
3
85°
52°
4
86°
54°
5
84°
54°
6
84°
59°
7
81°
54°
8
74°
56°
9
77°
52°
10
76°
50°
11
77°
50°
12
83°
46°
13
68°
47°
14
65°
44°
15
59°
40°
16
64°
42°
17
70°
43°
18
66°
44°
19
67°
45°
20
71°
47°
21
74°
49°
22
76°
55°
23
73°
46°
24
70°
43°
25
67°
40°
26
65°
42°
27
69°
42°
28
68°
44°
29
69°
43°
30
70°
49°
31
71°
43°
1
74°
49°
2
75°
50°
3
76°
49°
4
75°
48°
5
73°
46°
6
75°
49°
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 65° to 76°, with overnight lows between 40° and 55°. The average high for May is 71° with an average low of 46°. 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.
