S
M
T
W
T
F
S
29
48°
34°
30
50°
37°
1
53°
36°
2
51°
36°
3
53°
35°
4
48°
32°
5
51°
30°
6
50°
34°
7
51°
32°
8
42°
28°
9
41°
27°
10
40°
26°
11
38°
32°
12
40°
30°
13
42°
27°
14
38°
25°
15
40°
25°
16
40°
28°
17
41°
29°
18
40°
31°
19
47°
30°
20
44°
19°
21
38°
21°
22
35°
23°
23
33°
26°
24
37°
26°
25
43°
24°
26
44°
19°
27
35°
16°
28
31°
18°
29
33°
13°
30
34°
28°
31
40°
27°
1
49°
20°
2
42°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Glendon
Glendon's December 2026 forecast shows daily high temperatures ranging from 31° to 53°, with overnight lows between 13° and 37°. The average high for December is 42° with an average low of 27°. 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 Glendon. See also: January | February | March.