Frequently the weather in Glastonbury in December is 6. Average high degrees are usually 8 degrees celsius and a low of 2 degrees celsius. We have put some more info below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 6 |
| High Temperature | 8 |
| Low Temperature | 2 |
Useful Links: Glastonbury Weather: Average Weather & Yearly Climate