Typically the average temperate in Somme through the whole of July is 18. You can expect highs around 26 and low average expected to be 14 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 18 |
| High Temperature | 26 |
| Low Temperature | 14 |
Useful Links: Somme Weather: Average Weather & Yearly Climate