S
M
T
W
T
F
S
26
89°
72°
27
86°
71°
28
88°
72°
29
88°
73°
30
89°
73°
31
89°
72°
1
91°
73°
2
90°
74°
3
89°
74°
4
90°
73°
5
88°
73°
6
88°
74°
7
89°
73°
8
90°
74°
9
90°
74°
10
87°
73°
11
87°
73°
12
88°
72°
13
90°
73°
14
91°
73°
15
91°
72°
16
90°
72°
17
92°
74°
18
93°
73°
19
93°
71°
20
91°
69°
21
92°
70°
22
91°
71°
23
92°
71°
24
92°
69°
25
90°
68°
26
89°
70°
27
91°
68°
28
88°
69°
29
89°
71°
30
89°
68°
31
88°
68°
1
90°
67°
2
89°
67°
3
89°
70°
4
90°
71°
5
91°
68°
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 86° to 93°, with overnight lows between 67° and 74°. The average high for August is 90° with an average low of 71°. 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.