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°
55°
14
67°
50°
15
71°
49°
16
82°
60°
17
88°
60°
18
90°
64°
19
93°
65°
20
82°
55°
21
75°
56°
22
77°
57°
23
76°
56°
24
77°
57°
25
78°
53°
26
79°
58°
27
80°
59°
28
80°
59°
29
79°
58°
30
81°
60°
31
80°
59°
1
79°
56°
2
72°
53°
3
73°
52°
4
76°
59°
5
76°
60°
6
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Morrisville
Morrisville's May 2026 forecast shows daily high temperatures ranging from 67° to 93°, with overnight lows between 49° and 65°. The average high for May is 79° 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 Morrisville. See also: June | July | August.