Normally average temperatures in Luxembourg for the month of January is 1 with a high of 2 and low around -2 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 1 |
| High Temperature | 2 |
| Low Temperature | -2 |
| Sunshine Per Day | 2 |
Useful Links: Luxembourg Weather: Average Weather & Yearly Climate