S
M
T
W
T
F
S
26
60°
36°
27
65°
30°
28
59°
32°
29
56°
45°
30
55°
46°
1
65°
40°
2
59°
41°
3
56°
31°
4
72°
42°
5
79°
48°
6
71°
57°
7
66°
48°
8
63°
34°
9
60°
32°
10
74°
51°
11
63°
36°
12
65°
35°
13
63°
53°
14
62°
50°
15
56°
48°
16
77°
61°
17
83°
56°
18
67°
57°
19
86°
66°
20
78°
51°
21
66°
50°
22
68°
54°
23
69°
53°
24
69°
52°
25
70°
53°
26
72°
51°
27
68°
52°
28
66°
50°
29
67°
51°
30
67°
56°
31
69°
56°
1
69°
55°
2
70°
54°
3
69°
52°
4
69°
50°
5
70°
56°
6
71°
56°
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 86°, with overnight lows between 48° and 66°. The average high for May is 70° with an average low of 54°. 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.