S
M
T
W
T
F
S
29
48°
26°
30
35°
20°
1
33°
18°
2
36°
26°
3
45°
26°
4
42°
25°
5
37°
25°
6
35°
21°
7
31°
17°
8
34°
25°
9
43°
25°
10
44°
24°
11
44°
24°
12
43°
23°
13
44°
24°
14
40°
20°
15
41°
23°
16
41°
16°
17
39°
13°
18
32°
7°
19
31°
3°
20
24°
13°
21
29°
18°
22
38°
13°
23
37°
12°
24
35°
17°
25
37°
20°
26
37°
20°
27
41°
14°
28
38°
7°
29
35°
12°
30
32°
5°
31
28°
3°
1
23°
15°
2
28°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Valentine
Valentine's December 2026 forecast shows daily high temperatures ranging from 23° to 48°, with overnight lows between 3° and 26°. The average high for December is 37° with an average low of 18°. 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 Valentine. See also: January | February | March.
