SAN DIEGO — Friday temperatures were a touch cooler as onshore air flow picked up across San Diego. 

We will continue to stray away from our recent intense heat into the weekend. As high pressure weakens, a weak trough of low pressure will prompt a cooling trend taking us below seasonal west of the mountains. 

Additionally, we'll see night and morning clouds as the marine layer deepens.

SATURDAY MICROCLIMATE HIGHS:

  • Coastal highs around 71°, normal around 77°
  • Inland highs around 82°, normal around 89°
  • Mountain highs around 87°, normal around 85°
  • Desert highs around 109°, normal around 106°

SUNDAY MICROCLIMATE HIGHS:

  • Coastal highs around 71°, normal around 77°
  • Inland highs around 82°, normal around 89°
  • Mountain highs around 86°, normal around 85°
  • Desert highs around 107°, normal around 106°

AT THE COAST:

The UV index will peak at 10 this weekend, which is considered Very High. Sun protection is needed, UV radiation from the sun will cause skin damage. The time between 10 AM and 4 PM is when UV radiation from the sun is at its maximum.

This weekend will only be a pause in the heat. A strong ridge of high pressure will start building in from the east by the start of the week. As a result, temperatures will warm up and peak on Wednesday. A hot weather advisory and warning will likely be issued by midweek.