S
M
T
W
T
F
S
28
79°
66°
29
88°
75°
30
86°
68°
1
82°
64°
2
77°
66°
3
N/A
4
84°
65°
5
82°
64°
6
84°
67°
7
86°
69°
8
82°
68°
9
81°
63°
10
82°
64°
11
86°
63°
12
84°
66°
13
84°
65°
14
87°
66°
15
85°
65°
16
84°
65°
17
82°
61°
18
78°
65°
19
84°
65°
20
85°
65°
21
82°
64°
22
84°
65°
23
84°
65°
24
83°
64°
25
84°
65°
26
84°
63°
27
83°
65°
28
86°
66°
29
86°
66°
30
85°
65°
31
86°
67°
1
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Waterville
Waterville's July 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 61° and 69°. The average high for July is 84° with an average low of 65°. 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.