S
M
T
W
T
F
S
29
47°
26°
30
40°
24°
1
39°
25°
2
39°
31°
3
43°
32°
4
51°
29°
5
48°
28°
6
42°
28°
7
43°
29°
8
45°
31°
9
46°
26°
10
45°
30°
11
46°
32°
12
Hist. Avg.
44°
26°
13
Hist. Avg.
44°
25°
14
Hist. Avg.
43°
25°
15
Hist. Avg.
43°
25°
16
Hist. Avg.
43°
24°
17
Hist. Avg.
42°
24°
18
Hist. Avg.
42°
24°
19
Hist. Avg.
42°
24°
20
Hist. Avg.
42°
23°
21
Hist. Avg.
41°
23°
22
Hist. Avg.
41°
23°
23
Hist. Avg.
41°
22°
24
Hist. Avg.
41°
22°
25
Hist. Avg.
40°
22°
26
Hist. Avg.
40°
22°
27
Hist. Avg.
40°
21°
28
Hist. Avg.
40°
21°
29
Hist. Avg.
40°
21°
30
Hist. Avg.
39°
21°
31
Hist. Avg.
39°
20°
1
Hist. Avg.
39°
20°
2
Hist. Avg.
39°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Glocester
Glocester's December 2026 forecast shows daily high temperatures ranging from 39° to 51°, with overnight lows between 24° and 32°. The average high for December is 44° with an average low of 29°. 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 Glocester. See also: January | February | March.