S
M
T
W
T
F
S
26
62°
45°
27
74°
41°
28
76°
54°
29
58°
49°
30
53°
38°
1
49°
36°
2
47°
35°
3
61°
30°
4
73°
48°
5
73°
58°
6
60°
45°
7
60°
37°
8
60°
41°
9
70°
51°
10
64°
44°
11
65°
37°
12
69°
39°
13
71°
47°
14
61°
41°
15
70°
35°
16
72°
48°
17
84°
55°
18
89°
60°
19
89°
66°
20
67°
50°
21
66°
49°
22
62°
49°
23
75°
62°
24
76°
62°
25
77°
62°
26
80°
63°
27
76°
62°
28
78°
52°
29
74°
52°
30
70°
50°
31
69°
51°
1
72°
55°
2
72°
56°
3
73°
58°
4
74°
57°
5
76°
56°
6
73°
60°
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 69° to 80°, with overnight lows between 50° and 63°. The average high for May is 74° with an average low of 57°. 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.
