Generally the typical temperate in Arco right-through December is -4. You can expect highs around -3 with low average temperatures being -6 degrees. For more context we have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | -4 |
| High Temperature | -3 |
| Low Temperature | -6 |
Useful Links: Arco Weather: Average Weather & Yearly Climate