S
M
T
W
T
F
S
26
77°
49°
27
75°
54°
28
75°
56°
29
71°
53°
30
62°
45°
1
64°
40°
2
61°
41°
3
62°
34°
4
75°
43°
5
78°
62°
6
71°
54°
7
68°
41°
8
73°
48°
9
79°
57°
10
78°
51°
11
66°
39°
12
68°
49°
13
78°
56°
14
80°
59°
15
80°
59°
16
81°
61°
17
81°
61°
18
79°
56°
19
81°
60°
20
81°
59°
21
78°
54°
22
75°
52°
23
73°
51°
24
74°
53°
25
75°
56°
26
76°
53°
27
74°
53°
28
76°
54°
29
77°
55°
30
80°
61°
31
79°
62°
1
79°
63°
2
78°
62°
3
78°
60°
4
79°
60°
5
81°
63°
6
84°
65°
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 66° to 84°, with overnight lows between 39° and 65°. The average high for May is 77° with an average low of 56°. 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.