S
M
T
W
T
F
S
26
87°
67°
27
88°
68°
28
89°
72°
29
88°
72°
30
85°
71°
31
90°
71°
1
89°
70°
2
85°
70°
3
87°
71°
4
85°
71°
5
86°
68°
6
85°
69°
7
85°
68°
8
86°
70°
9
87°
71°
10
84°
71°
11
85°
69°
12
84°
68°
13
83°
68°
14
83°
66°
15
84°
70°
16
86°
70°
17
84°
69°
18
84°
70°
19
85°
68°
20
83°
65°
21
86°
63°
22
83°
62°
23
82°
62°
24
84°
65°
25
83°
64°
26
84°
67°
27
88°
66°
28
89°
68°
29
88°
66°
30
87°
68°
31
87°
66°
1
81°
63°
2
83°
67°
3
86°
62°
4
88°
67°
5
87°
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 81° to 90°, with overnight lows between 62° and 72°. The average high for August is 86° with an average low of 68°. 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.