S
M
T
W
T
F
S
26
72°
61°
27
68°
55°
28
75°
63°
29
75°
59°
30
72°
54°
31
70°
50°
1
72°
52°
2
81°
59°
3
85°
61°
4
75°
60°
5
73°
54°
6
74°
55°
7
77°
60°
8
72°
57°
9
74°
58°
10
75°
59°
11
76°
60°
12
75°
59°
13
74°
57°
14
75°
58°
15
71°
57°
16
70°
56°
17
68°
56°
18
67°
54°
19
67°
52°
20
66°
52°
21
66°
51°
22
67°
51°
23
67°
53°
24
69°
56°
25
71°
56°
26
70°
54°
27
69°
53°
28
70°
56°
29
70°
54°
30
71°
55°
31
71°
56°
1
68°
55°
2
67°
52°
3
67°
50°
4
66°
51°
5
67°
50°
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 66° to 85°, with overnight lows between 50° and 61°. The average high for August is 71° with an average low of 55°. 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.