You should expect the average temperature in Cullen throughout the time of December is 5 with a normal high in the month being 6 with lows about 1. We have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 5 |
| High Temperature | 6 |
| Low Temperature | 1 |
Useful Links: Cullen Weather: Average Weather & Yearly Climate