Normally the average weather in Welwyn Garden City throughout the duration of September is 6 with the high being 12 degrees celsius with a low of 3.7. Discover more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 6 |
| High Temperature | 12 |
| Low Temperature | 3.7 |
| Sunshine Per Day | 6 |
Useful Links: Welwyn Garden City Weather: Average Weather & Yearly Climate