S
M
T
W
T
F
S
29
26°
2°
30
37°
8°
1
32°
1°
2
28°
4°
3
29°
0°
4
28°
5°
5
33°
9°
6
37°
4°
7
27°
-1°
8
26°
2°
9
32°
4°
10
36°
7°
11
35°
2°
12
30°
6°
13
36°
7°
14
38°
7°
15
38°
5°
16
37°
6°
17
37°
7°
18
38°
8°
19
39°
8°
20
40°
7°
21
40°
7°
22
37°
1°
23
28°
-1°
24
29°
7°
25
30°
10°
26
34°
9°
27
33°
7°
28
33°
4°
29
27°
-4°
30
24°
-9°
31
22°
-6°
1
30°
-6°
2
25°
-4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in La Plata
La Plata's December 2026 forecast shows daily high temperatures ranging from 22° to 40°, with overnight lows between -9° and 10°. The average high for December is 32° with an average low of 4°. 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 La Plata. See also: January | February | March.
