S
M
T
W
T
F
S
26
61°
41°
27
66°
43°
28
57°
45°
29
59°
46°
30
63°
48°
1
70°
50°
2
68°
48°
3
64°
50°
4
57°
48°
5
59°
41°
6
54°
41°
7
54°
45°
8
63°
41°
9
64°
43°
10
54°
34°
11
52°
34°
12
59°
30°
13
54°
39°
14
50°
37°
15
54°
41°
16
57°
37°
17
61°
48°
18
57°
41°
19
63°
50°
20
66°
50°
21
72°
50°
22
80°
58°
23
81°
54°
24
82°
54°
25
86°
55°
26
84°
51°
27
72°
49°
28
70°
50°
29
74°
51°
30
74°
52°
31
70°
50°
1
70°
52°
2
67°
52°
3
68°
51°
4
63°
47°
5
64°
48°
6
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Newton
Newton's May 2026 forecast shows daily high temperatures ranging from 63° to 86°, with overnight lows between 46° and 58°. The average high for May is 73° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Newton. See also: June | July | August.