S
M
T
W
T
F
S
26
88°
76°
27
94°
76°
28
94°
76°
29
94°
73°
30
92°
75°
1
91°
65°
2
73°
59°
3
84°
56°
4
82°
75°
5
85°
76°
6
87°
76°
7
81°
73°
8
81°
71°
9
84°
75°
10
87°
74°
11
82°
72°
12
85°
71°
13
88°
76°
14
82°
72°
15
83°
73°
16
86°
75°
17
85°
74°
18
84°
74°
19
84°
75°
20
86°
75°
21
85°
74°
22
85°
71°
23
82°
71°
24
83°
75°
25
84°
74°
26
84°
72°
27
82°
72°
28
82°
74°
29
83°
74°
30
85°
77°
31
84°
76°
1
84°
76°
2
85°
77°
3
85°
78°
4
86°
78°
5
86°
77°
6
87°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Mansfield
Port Mansfield's May 2026 forecast shows daily high temperatures ranging from 81° to 88°, with overnight lows between 71° and 78°. The average high for May is 84° with an average low of 74°. 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 Port Mansfield. See also: June | July | August.