S
M
T
W
T
F
S
26
51°
38°
27
59°
42°
28
61°
44°
29
48°
37°
30
45°
34°
1
43°
28°
2
50°
28°
3
67°
37°
4
78°
48°
5
55°
38°
6
50°
30°
7
53°
36°
8
65°
37°
9
62°
36°
10
59°
34°
11
46°
27°
12
72°
33°
13
59°
38°
14
62°
37°
15
62°
53°
16
80°
46°
17
58°
52°
18
71°
56°
19
71°
44°
20
54°
40°
21
57°
43°
22
61°
49°
23
66°
52°
24
64°
51°
25
67°
54°
26
67°
52°
27
68°
53°
28
65°
48°
29
60°
50°
30
60°
50°
31
61°
47°
1
61°
45°
2
62°
45°
3
61°
49°
4
64°
56°
5
72°
58°
6
73°
58°
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 54° to 80°, with overnight lows between 40° and 58°. The average high for May is 65° with an average low of 50°. 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.