S
M
T
W
T
F
S
26
65°
32°
27
73°
38°
28
74°
38°
29
69°
51°
30
57°
43°
1
57°
38°
2
50°
41°
3
55°
37°
4
71°
46°
5
72°
43°
6
46°
42°
7
57°
37°
8
55°
36°
9
57°
43°
10
63°
46°
11
53°
41°
12
56°
39°
13
54°
43°
14
59°
45°
15
64°
48°
16
60°
45°
17
59°
43°
18
60°
47°
19
64°
35°
20
61°
41°
21
62°
43°
22
63°
42°
23
64°
43°
24
69°
49°
25
72°
50°
26
73°
51°
27
70°
44°
28
65°
43°
29
65°
44°
30
69°
51°
31
75°
53°
1
73°
52°
2
71°
48°
3
73°
53°
4
75°
54°
5
76°
55°
6
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Plattsburgh
Plattsburgh's May 2026 forecast shows daily high temperatures ranging from 46° to 76°, with overnight lows between 35° and 55°. The average high for May is 64° with an average low of 46°. 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 Plattsburgh. See also: June | July | August.
