S
M
T
W
T
F
S
26
47°
33°
27
47°
33°
28
45°
34°
29
49°
38°
30
53°
38°
1
51°
35°
2
50°
34°
3
46°
32°
4
47°
32°
5
48°
37°
6
48°
35°
7
49°
35°
8
48°
34°
9
49°
40°
10
51°
39°
11
51°
38°
12
52°
37°
13
52°
41°
14
55°
36°
15
52°
37°
16
53°
40°
17
52°
42°
18
54°
41°
19
58°
44°
20
61°
45°
21
63°
45°
22
62°
44°
23
57°
45°
24
56°
45°
25
57°
45°
26
65°
47°
27
66°
46°
28
65°
44°
29
59°
42°
30
63°
44°
31
62°
48°
1
65°
49°
2
66°
49°
3
64°
48°
4
68°
43°
5
64°
49°
6
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Poirier
Poirier's May 2026 forecast shows daily high temperatures ranging from 45° to 68°, with overnight lows between 32° and 50°. The average high for May is 56° with an average low of 41°. 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 Poirier. See also: June | July | August.