S
M
T
W
T
F
S
29
41°
21°
30
39°
21°
1
39°
20°
2
40°
21°
3
40°
24°
4
44°
27°
5
46°
29°
6
40°
31°
7
39°
28°
8
38°
28°
9
39°
26°
10
38°
25°
11
51°
32°
12
47°
28°
13
51°
25°
14
52°
23°
15
37°
22°
16
39°
20°
17
37°
24°
18
39°
31°
19
45°
32°
20
49°
34°
21
49°
31°
22
48°
31°
23
48°
33°
24
51°
32°
25
53°
24°
26
53°
22°
27
38°
22°
28
38°
26°
29
44°
30°
30
47°
32°
31
48°
34°
1
49°
32°
2
51°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Keyser
Keyser's December 2026 forecast shows daily high temperatures ranging from 37° to 53°, with overnight lows between 20° and 34°. The average high for December is 44° 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 Keyser. See also: January | February | March.
