S
M
T
W
T
F
S
26
88°
72°
27
88°
75°
28
90°
73°
29
84°
68°
30
70°
63°
1
63°
54°
2
73°
50°
3
79°
46°
4
79°
48°
5
81°
64°
6
81°
63°
7
77°
57°
8
73°
63°
9
84°
66°
10
88°
68°
11
75°
63°
12
84°
59°
13
86°
57°
14
90°
61°
15
88°
64°
16
88°
68°
17
84°
73°
18
86°
77°
19
84°
66°
20
77°
64°
21
79°
66°
22
87°
68°
23
79°
68°
24
75°
67°
25
78°
68°
26
85°
70°
27
76°
69°
28
80°
68°
29
85°
67°
30
83°
66°
31
85°
64°
1
86°
68°
2
86°
69°
3
88°
68°
4
87°
66°
5
86°
69°
6
85°
68°
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 75° to 88°, with overnight lows between 64° and 70°. The average high for May is 83° with an average low of 68°. 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.