Typically, the average weather in Allendale through the month of September is 10. Through the month the highs are about 17 and low around 6. See our table below for a full breakdown:
| Month | Degrees Celsius |
|---|---|
| Temperature | 10 |
| High Temperature | 17 |
| Low Temperature | 6 |
Useful Links: Allendale Weather: Average Weather & Yearly Climate