S
M
T
W
T
F
S
26
67°
44°
27
64°
53°
28
60°
52°
29
58°
38°
30
59°
35°
1
52°
38°
2
53°
33°
3
63°
41°
4
77°
52°
5
56°
44°
6
58°
40°
7
59°
44°
8
64°
45°
9
70°
48°
10
65°
44°
11
67°
45°
12
66°
47°
13
71°
51°
14
70°
46°
15
72°
52°
16
75°
53°
17
76°
51°
18
70°
53°
19
77°
56°
20
75°
56°
21
75°
47°
22
69°
47°
23
68°
48°
24
70°
48°
25
70°
50°
26
71°
49°
27
70°
49°
28
71°
50°
29
72°
54°
30
73°
59°
31
77°
55°
1
73°
53°
2
76°
57°
3
78°
60°
4
79°
60°
5
80°
61°
6
82°
63°
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 56° to 82°, with overnight lows between 40° and 63°. The average high for May is 71° 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.