Typically the average temperate in Flagstaff during the month of December is 0. Average highs are typically 4 degrees celsius and a low of -7. The table below has some further insights:
| Month | Degrees Celsius |
|---|---|
| Temperature | 0 |
| High Temperature | 4 |
| Low Temperature | -7 |
| Sunshine Per Day | 9 |
Useful Links: Flagstaff Weather: Average Weather & Yearly Climate