S
M
T
W
T
F
S
26
82°
54°
27
68°
59°
28
68°
57°
29
65°
49°
30
63°
42°
1
59°
46°
2
58°
41°
3
68°
38°
4
76°
55°
5
69°
46°
6
61°
46°
7
65°
40°
8
73°
49°
9
76°
54°
10
71°
55°
11
73°
47°
12
80°
47°
13
72°
54°
14
70°
44°
15
79°
52°
16
81°
64°
17
85°
66°
18
81°
66°
19
82°
59°
20
66°
53°
21
72°
58°
22
69°
61°
23
75°
60°
24
77°
63°
25
76°
64°
26
76°
66°
27
78°
64°
28
78°
65°
29
80°
64°
30
80°
63°
31
79°
64°
1
80°
60°
2
81°
64°
3
76°
60°
4
74°
57°
5
76°
61°
6
80°
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 82°, with overnight lows between 53° and 66°. The average high for May is 77° with an average low of 62°. 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.