S
M
T
W
T
F
S
26
86°
70°
27
88°
71°
28
89°
71°
29
89°
70°
30
88°
71°
31
88°
70°
1
89°
71°
2
90°
72°
3
90°
72°
4
89°
71°
5
89°
71°
6
88°
70°
7
91°
70°
8
88°
68°
9
85°
67°
10
83°
68°
11
88°
71°
12
89°
72°
13
90°
72°
14
90°
71°
15
89°
69°
16
87°
65°
17
87°
64°
18
82°
64°
19
84°
66°
20
87°
67°
21
88°
68°
22
87°
67°
23
83°
64°
24
81°
62°
25
80°
61°
26
80°
60°
27
81°
60°
28
80°
61°
29
80°
61°
30
82°
65°
31
84°
66°
1
85°
66°
2
86°
65°
3
86°
59°
4
85°
58°
5
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Newton
Newton's August 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 58° and 72°. The average high for August is 86° 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 August weather will actually feel in Newton. See also: September | October | November.