S
M
T
W
T
F
S
26
90°
71°
27
87°
70°
28
90°
71°
29
91°
72°
30
92°
71°
31
91°
70°
1
86°
70°
2
90°
68°
3
90°
69°
4
91°
71°
5
92°
71°
6
91°
70°
7
89°
65°
8
90°
69°
9
89°
69°
10
90°
67°
11
86°
66°
12
85°
64°
13
88°
66°
14
90°
68°
15
87°
68°
16
85°
67°
17
85°
67°
18
90°
68°
19
90°
68°
20
85°
67°
21
87°
68°
22
86°
67°
23
84°
65°
24
89°
64°
25
89°
67°
26
90°
62°
27
87°
61°
28
83°
61°
29
84°
63°
30
83°
62°
31
84°
66°
1
87°
65°
2
82°
61°
3
81°
60°
4
81°
59°
5
82°
58°
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 92°, with overnight lows between 58° and 72°. The average high for August is 87° with an average low of 66°. 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.