S
M
T
W
T
F
S
26
59°
41°
27
69°
38°
28
62°
40°
29
65°
48°
30
63°
47°
1
64°
42°
2
61°
46°
3
60°
43°
4
72°
42°
5
82°
54°
6
68°
55°
7
65°
49°
8
66°
44°
9
64°
48°
10
77°
47°
11
61°
47°
12
66°
40°
13
74°
49°
14
65°
51°
15
67°
50°
16
82°
45°
17
91°
65°
18
97°
70°
19
98°
70°
20
93°
52°
21
67°
47°
22
61°
47°
23
66°
51°
24
67°
54°
25
71°
55°
26
72°
55°
27
77°
53°
28
75°
54°
29
77°
57°
30
81°
54°
31
78°
59°
1
77°
58°
2
74°
57°
3
71°
59°
4
73°
59°
5
77°
57°
6
76°
59°
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 61° to 98°, with overnight lows between 47° and 70°. The average high for May is 77° with an average low of 57°. 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.