S
M
T
W
T
F
S
26
55°
32°
27
67°
39°
28
51°
48°
29
54°
43°
30
52°
29°
1
53°
33°
2
45°
28°
3
56°
35°
4
72°
52°
5
73°
54°
6
57°
32°
7
58°
31°
8
57°
39°
9
61°
49°
10
62°
32°
11
60°
30°
12
67°
37°
13
66°
46°
14
49°
43°
15
65°
43°
16
78°
61°
17
80°
57°
18
89°
60°
19
82°
60°
20
72°
49°
21
63°
43°
22
61°
45°
23
67°
47°
24
73°
49°
25
72°
52°
26
73°
55°
27
75°
48°
28
71°
52°
29
66°
53°
30
66°
52°
31
67°
48°
1
66°
45°
2
66°
45°
3
65°
46°
4
67°
45°
5
71°
54°
6
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Newtown
Newtown's May 2026 forecast shows daily high temperatures ranging from 49° to 89°, with overnight lows between 43° and 61°. The average high for May is 70° with an average low of 50°. 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 Newtown. See also: June | July | August.