Weather in Arillas throughout the duration of December is 9 with a normal high in the month being 15 with low of 7 degrees. With the details being further below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 9 |
| High Temperature | 15 |
| Low Temperature | 7 |
| Sunshine Per Day | 4 |
Useful Links: Arillas Weather: Average Weather & Yearly Climate