Typically the weather in Windsor throughout the time of September is 14 with a general average high of 20 with lows about 11 degrees celsius. We have put some more info below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 20 |
| Low Temperature | 11 |
| Sunshine Per Day | 6 |
Useful Links: Windsor Weather: Average Weather & Yearly Climate