S
M
T
W
T
F
S
26
86°
69°
27
86°
68°
28
87°
69°
29
87°
67°
30
86°
68°
31
82°
67°
1
80°
63°
2
79°
64°
3
80°
67°
4
81°
66°
5
84°
67°
6
86°
68°
7
87°
69°
8
87°
69°
9
86°
68°
10
86°
67°
11
85°
67°
12
87°
66°
13
86°
68°
14
89°
63°
15
84°
65°
16
85°
63°
17
79°
62°
18
82°
58°
19
81°
55°
20
78°
54°
21
77°
56°
22
78°
56°
23
78°
54°
24
79°
61°
25
81°
60°
26
86°
63°
27
86°
63°
28
87°
59°
29
84°
54°
30
77°
55°
31
75°
57°
1
75°
54°
2
76°
52°
3
76°
58°
4
80°
60°
5
76°
60°
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 75° to 89°, with overnight lows between 52° and 69°. The average high for August is 82° with an average low of 62°. 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.