Normally the weather in Mexico City during the time of September is 16. You can expect highs around 23 with lows around 12. Our table below has the full details:
| Month | Degrees Celsius |
|---|---|
| Temperature | 16 |
| High Temperature | 23 |
| Low Temperature | 12 |
| Sunshine Per Day | 6 |
Useful Links: Mexico City Weather: Average Weather & Yearly Climate