S
M
T
W
T
F
S
26
70°
31°
27
58°
48°
28
55°
42°
29
72°
40°
30
78°
38°
1
75°
45°
2
79°
49°
3
86°
43°
4
72°
44°
5
68°
52°
6
58°
50°
7
67°
47°
8
62°
45°
9
72°
39°
10
68°
48°
11
75°
45°
12
81°
40°
13
58°
49°
14
59°
46°
15
51°
41°
16
59°
37°
17
64°
35°
18
69°
42°
19
64°
47°
20
71°
43°
21
77°
50°
22
74°
51°
23
72°
46°
24
64°
49°
25
62°
43°
26
66°
44°
27
67°
45°
28
64°
41°
29
67°
44°
30
71°
43°
31
73°
48°
1
70°
47°
2
75°
51°
3
76°
51°
4
73°
50°
5
71°
46°
6
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Porter
Porter's May 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 41° and 51°. The average high for May is 70° with an average low of 47°. 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 Porter. See also: June | July | August.