Frequently the average temperatures in Marlborough throughout the month of September is 14 with a normal high in the month being 22 and low being 9. See our table below for a full breakdown:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 22 |
| Low Temperature | 9 |
Useful Links: Marlborough Weather: Average Weather & Yearly Climate