S
M
T
W
T
F
S
26
85°
59°
27
85°
60°
28
81°
63°
29
86°
65°
30
80°
66°
1
69°
56°
2
74°
47°
3
77°
43°
4
82°
44°
5
83°
48°
6
89°
65°
7
81°
67°
8
76°
63°
9
69°
63°
10
83°
64°
11
87°
64°
12
71°
62°
13
84°
60°
14
84°
55°
15
84°
52°
16
89°
56°
17
90°
66°
18
92°
68°
19
93°
70°
20
92°
70°
21
89°
69°
22
89°
69°
23
89°
69°
24
87°
72°
25
80°
72°
26
87°
70°
27
82°
70°
28
83°
71°
29
83°
70°
30
83°
69°
31
81°
68°
1
83°
65°
2
82°
66°
3
83°
67°
4
83°
65°
5
80°
68°
6
83°
67°
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 80° to 87°, with overnight lows between 65° and 71°. 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.