S
M
T
W
T
F
S
26
73°
54°
27
73°
48°
28
57°
46°
29
59°
43°
30
54°
41°
1
57°
36°
2
63°
37°
3
75°
50°
4
84°
48°
5
61°
43°
6
57°
39°
7
66°
39°
8
75°
46°
9
73°
46°
10
72°
43°
11
73°
43°
12
79°
55°
13
75°
50°
14
78°
57°
15
87°
61°
16
85°
65°
17
86°
67°
18
79°
57°
19
72°
50°
20
66°
48°
21
65°
50°
22
70°
52°
23
75°
57°
24
76°
58°
25
76°
59°
26
78°
58°
27
75°
54°
28
72°
56°
29
71°
55°
30
70°
54°
31
72°
55°
1
71°
52°
2
72°
55°
3
73°
61°
4
81°
63°
5
82°
64°
6
83°
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 65° to 87°, with overnight lows between 48° and 67°. The average high for May is 76° with an average low of 57°. 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.