S
M
T
W
T
F
S
26
71°
48°
27
72°
45°
28
79°
50°
29
83°
56°
30
86°
61°
1
89°
64°
2
89°
62°
3
89°
61°
4
75°
59°
5
74°
52°
6
83°
54°
7
94°
65°
8
100°
71°
9
99°
69°
10
101°
70°
11
103°
72°
12
99°
78°
13
94°
69°
14
93°
67°
15
97°
69°
16
91°
68°
17
90°
65°
18
77°
57°
19
82°
53°
20
88°
58°
21
93°
65°
22
94°
66°
23
93°
64°
24
91°
65°
25
94°
63°
26
93°
60°
27
87°
56°
28
80°
59°
29
83°
65°
30
89°
69°
31
92°
72°
1
96°
71°
2
97°
71°
3
97°
72°
4
96°
71°
5
93°
72°
6
94°
70°
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 80° to 97°, with overnight lows between 56° and 72°. The average high for May is 92° with an average low of 67°. 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.