S
M
T
W
T
F
S
26
83°
57°
27
76°
56°
28
77°
56°
29
78°
57°
30
78°
55°
31
81°
55°
1
80°
59°
2
82°
59°
3
83°
63°
4
84°
61°
5
79°
58°
6
83°
62°
7
83°
62°
8
81°
61°
9
82°
63°
10
84°
64°
11
85°
62°
12
82°
55°
13
83°
58°
14
82°
58°
15
75°
56°
16
Hist. Avg.
80°
58°
17
Hist. Avg.
80°
58°
18
Hist. Avg.
80°
57°
19
Hist. Avg.
80°
57°
20
Hist. Avg.
79°
57°
21
Hist. Avg.
79°
57°
22
Hist. Avg.
79°
57°
23
Hist. Avg.
79°
56°
24
Hist. Avg.
79°
56°
25
Hist. Avg.
79°
56°
26
Hist. Avg.
78°
56°
27
Hist. Avg.
78°
56°
28
Hist. Avg.
78°
55°
29
Hist. Avg.
78°
55°
30
Hist. Avg.
78°
55°
31
Hist. Avg.
77°
55°
1
Hist. Avg.
77°
54°
2
Hist. Avg.
77°
54°
3
Hist. Avg.
76°
54°
4
Hist. Avg.
76°
54°
5
Hist. Avg.
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Waterville
Waterville's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 55° and 64°. The average high for August is 81° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Waterville. See also: September | October | November.