S
M
T
W
T
F
S
26
83°
61°
27
89°
66°
28
71°
55°
29
71°
52°
30
69°
47°
1
71°
47°
2
72°
44°
3
85°
58°
4
83°
68°
5
77°
49°
6
60°
42°
7
69°
52°
8
77°
57°
9
82°
61°
10
77°
55°
11
78°
56°
12
82°
64°
13
80°
62°
14
83°
58°
15
80°
59°
16
79°
64°
17
75°
63°
18
77°
64°
19
79°
63°
20
76°
61°
21
81°
56°
22
74°
56°
23
75°
58°
24
73°
59°
25
74°
57°
26
75°
57°
27
76°
59°
28
77°
60°
29
78°
63°
30
77°
67°
31
78°
65°
1
78°
60°
2
79°
63°
3
80°
68°
4
80°
68°
5
79°
67°
6
80°
69°
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 60° to 85°, with overnight lows between 42° and 69°. The average high for May is 77° with an average low of 60°. 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.