S
M
T
W
T
F
S
29
49°
36°
30
48°
35°
1
44°
35°
2
43°
33°
3
43°
32°
4
44°
38°
5
48°
37°
6
48°
37°
7
47°
36°
8
47°
37°
9
46°
37°
10
49°
36°
11
47°
36°
12
46°
35°
13
47°
34°
14
46°
35°
15
45°
37°
16
45°
33°
17
46°
35°
18
42°
35°
19
Hist. Avg.
44°
36°
20
Hist. Avg.
44°
36°
21
Hist. Avg.
44°
36°
22
Hist. Avg.
44°
36°
23
Hist. Avg.
44°
36°
24
Hist. Avg.
43°
35°
25
Hist. Avg.
43°
35°
26
Hist. Avg.
43°
35°
27
Hist. Avg.
43°
35°
28
Hist. Avg.
43°
35°
29
Hist. Avg.
43°
35°
30
Hist. Avg.
43°
35°
31
Hist. Avg.
43°
35°
1
Hist. Avg.
43°
35°
2
Hist. Avg.
43°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Glasgow
Glasgow's December 2026 forecast shows daily high temperatures ranging from 42° to 49°, with overnight lows between 32° and 38°. The average high for December is 46° with an average low of 35°. 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.