S
M
T
W
T
F
S
26
58°
37°
27
65°
40°
28
62°
50°
29
50°
40°
30
54°
39°
1
50°
32°
2
47°
31°
3
58°
32°
4
73°
49°
5
63°
47°
6
49°
39°
7
54°
39°
8
55°
37°
9
62°
42°
10
58°
41°
11
55°
38°
12
55°
36°
13
60°
44°
14
52°
43°
15
69°
41°
16
70°
48°
17
80°
54°
18
88°
55°
19
87°
68°
20
70°
46°
21
58°
43°
22
62°
42°
23
58°
45°
24
62°
53°
25
76°
58°
26
82°
58°
27
77°
50°
28
71°
50°
29
70°
46°
30
66°
46°
31
68°
51°
1
72°
50°
2
69°
50°
3
74°
54°
4
74°
56°
5
75°
54°
6
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glasgow
Glasgow's May 2026 forecast shows daily high temperatures ranging from 62° to 82°, with overnight lows between 46° and 58°. The average high for May is 72° with an average low of 52°. 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 Glasgow. See also: June | July | August.