S
M
T
W
T
F
S
28
75°
56°
29
73°
57°
30
78°
57°
1
77°
56°
2
76°
63°
3
71°
55°
4
72°
50°
5
72°
49°
6
73°
53°
7
74°
56°
8
78°
56°
9
78°
54°
10
74°
50°
11
76°
57°
12
79°
55°
13
73°
51°
14
72°
50°
15
74°
56°
16
80°
57°
17
77°
52°
18
72°
50°
19
72°
54°
20
73°
58°
21
75°
58°
22
74°
57°
23
74°
56°
24
75°
52°
25
75°
54°
26
79°
56°
27
80°
56°
28
76°
55°
29
74°
52°
30
80°
57°
31
74°
53°
1
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Waterville
Waterville's July 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 49° and 63°. The average high for July is 75° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Waterville. See also: August | September | October.