S
M
T
W
T
F
S
26
85°
71°
27
87°
69°
28
90°
71°
29
87°
67°
30
85°
63°
31
85°
62°
1
84°
66°
2
80°
70°
3
85°
69°
4
85°
71°
5
85°
71°
6
86°
68°
7
86°
68°
8
87°
69°
9
89°
68°
10
90°
68°
11
90°
67°
12
87°
68°
13
89°
70°
14
92°
72°
15
90°
74°
16
92°
74°
17
95°
71°
18
89°
69°
19
89°
70°
20
90°
71°
21
83°
68°
22
83°
67°
23
85°
65°
24
84°
62°
25
86°
63°
26
85°
66°
27
86°
68°
28
85°
66°
29
85°
67°
30
85°
66°
31
88°
68°
1
87°
65°
2
84°
64°
3
85°
64°
4
83°
63°
5
85°
64°
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 83° to 88°, with overnight lows between 63° and 68°. The average high for August is 85° 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 August weather will actually feel in Newton. See also: September | October | November.