S
M
T
W
T
F
S
28
82°
65°
29
90°
73°
30
92°
73°
1
94°
72°
2
96°
70°
3
90°
67°
4
87°
66°
5
83°
65°
6
84°
66°
7
85°
64°
8
82°
63°
9
80°
64°
10
86°
67°
11
84°
66°
12
84°
66°
13
85°
65°
14
84°
67°
15
86°
67°
16
82°
66°
17
87°
68°
18
87°
68°
19
85°
67°
20
84°
67°
21
82°
66°
22
81°
68°
23
87°
69°
24
86°
67°
25
83°
66°
26
82°
67°
27
86°
68°
28
86°
68°
29
85°
67°
30
84°
66°
31
80°
62°
1
79°
66°
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 79° to 96°, with overnight lows between 62° and 73°. The average high for July is 85° with an average low of 67°. 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.