S
M
T
W
T
F
S
26
48°
33°
27
42°
24°
28
36°
24°
29
39°
25°
30
N/A
1
46°
38°
2
45°
38°
3
47°
38°
4
42°
37°
5
65°
40°
6
65°
40°
7
59°
38°
8
58°
37°
9
55°
39°
10
59°
39°
11
57°
38°
12
58°
34°
13
56°
35°
14
52°
33°
15
53°
34°
16
53°
33°
17
54°
33°
18
56°
38°
19
56°
39°
20
54°
39°
21
55°
40°
22
61°
40°
23
57°
38°
24
55°
38°
25
56°
39°
26
56°
36°
27
57°
40°
28
56°
38°
29
56°
38°
30
57°
39°
31
57°
41°
1
58°
40°
2
57°
40°
3
57°
39°
4
58°
40°
5
58°
40°
6
59°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Kirwan
Port Kirwan's May 2026 forecast shows daily high temperatures ranging from 42° to 65°, with overnight lows between 33° and 41°. The average high for May is 56° with an average low of 38°. 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 Kirwan. See also: June | July | August.
