S
M
T
W
T
F
S
26
100°
75°
27
96°
76°
28
88°
72°
29
86°
68°
30
82°
64°
31
81°
63°
1
81°
63°
2
82°
64°
3
82°
63°
4
75°
64°
5
72°
63°
6
81°
66°
7
84°
64°
8
81°
63°
9
86°
70°
10
88°
72°
11
90°
73°
12
84°
72°
13
81°
70°
14
77°
72°
15
84°
73°
16
79°
66°
17
81°
63°
18
N/A
19
79°
60°
20
80°
64°
21
82°
63°
22
80°
57°
23
77°
60°
24
76°
60°
25
80°
61°
26
79°
60°
27
78°
59°
28
80°
58°
29
79°
61°
30
80°
59°
31
79°
61°
1
80°
58°
2
74°
58°
3
73°
54°
4
75°
60°
5
76°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Newton
Newton's August 2026 forecast shows daily high temperatures ranging from 73° to 82°, with overnight lows between 54° and 64°. The average high for August is 78° with an average low of 60°. 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.