S
M
T
W
T
F
S
29
37°
22°
30
26°
18°
1
32°
24°
2
40°
25°
3
40°
24°
4
39°
23°
5
36°
22°
6
32°
21°
7
28°
22°
8
38°
22°
9
39°
21°
10
37°
22°
11
38°
22°
12
37°
21°
13
36°
22°
14
31°
17°
15
30°
17°
16
32°
10°
17
27°
4°
18
26°
1°
19
24°
12°
20
21°
17°
21
32°
11°
22
31°
11°
23
25°
16°
24
31°
15°
25
29°
17°
26
31°
11°
27
31°
0°
28
23°
3°
29
16°
3°
30
20°
2°
31
18°
11°
1
20°
16°
2
29°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Glasgow
Glasgow's December 2026 forecast shows daily high temperatures ranging from 16° to 40°, with overnight lows between -0° and 25°. The average high for December is 30° with an average low of 15°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Glasgow. See also: January | February | March.
