SAN DIEGO — The deep marine layer and west winds are being fueled by a weak trough of low pressure over the West. These factors will keep temps a few degrees below normal, west of the mountains, while the mountains and desert peak a few degrees above seasonal. 

SATURDAY MICROCLIMATE HIGHS:

  •     Coastal highs around 68°, normal around 71°
  •     Inland highs around 78°, normal around 82°
  •     Mountain highs around 81°, normal around 77°
  •     Desert highs around 107°, normal around 102°

AT THE COAST:

The UV index will peak at 9 Saturday, 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.

Not much of a difference in the forecast for Father's Day. The marine layer will roll in by nighttime, stick around in the morning and clear by the afternoon on Sunday. Basically, nice weather on repeat! 

SUNDAY MICROCLIMATE HIGHS:

  •     Coastal highs around 67°, normal around 71°
  •     Inland highs around 78°, normal around 82°
  •     Mountain highs around 81°, normal around 77°
  •     Desert highs around 105°, normal around 102°

By next week, a ridge of high pressure will build over the Eastern Pacific, pushing warmer air into the region by the middle of the week. Temperatures will be warm and above average Tuesday onward, with a decrease in the marine layer.