S
M
T
W
T
F
S
26
55°
28°
27
46°
36°
28
48°
28°
29
52°
28°
30
50°
27°
1
55°
25°
2
72°
36°
3
73°
36°
4
55°
30°
5
45°
28°
6
45°
32°
7
63°
25°
8
70°
34°
9
59°
37°
10
55°
39°
11
70°
36°
12
72°
46°
13
75°
37°
14
82°
57°
15
81°
50°
16
59°
43°
17
61°
41°
18
48°
43°
19
48°
37°
20
64°
34°
21
70°
49°
22
60°
48°
23
71°
46°
24
79°
55°
25
86°
62°
26
88°
62°
27
81°
60°
28
79°
61°
29
80°
60°
30
80°
58°
31
79°
60°
1
77°
56°
2
76°
56°
3
75°
55°
4
78°
55°
5
69°
49°
6
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glyndon
Glyndon's May 2026 forecast shows daily high temperatures ranging from 60° to 88°, with overnight lows between 46° and 62°. The average high for May is 76° with an average low of 56°. 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 Glyndon. See also: June | July | August.