You should expect the average temperature in Slough through the whole of May is 11. Average high is typically 17 and low of 8. We have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 11 |
| High Temperature | 17 |
| Low Temperature | 8 |
| Sunshine Per Day | 7 |
Useful Links: Slough Weather: Average Weather & Yearly Climate