SAN DIEGO — Wednesday afternoon high temperatures will be near seasonal average.

  • Coastal highs 73°-86°, normal around 77°.
  • Inland highs 84°-98°, normal around 89°.
  • Mountain highs 91°-101°, normal around 85°.
  • Desert highs 113°-118°, normal around 105°.

At the beach, the rip current risk is low with water temperature 64°-70°. Waves are 1'-3' from a westerly mix.

A shallower marine layer will result in more dense fog Wednesday morning. Clouds were slow to develop early in the morning. Areas further inland will not see much fog or cloud cover, but coastal areas will likely see more fog than previous days this week. 

The UV index will peak at 10 Wednesday, 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.


An Excessive Heat Warning has been issued for San Diego County deserts from 11 AM to 8 PM Wednesday. Afternoon high temperatures 114°-119°. Overexposure to the heat can cause heat illness. 

Excessive Heat
KFMB Weather


High pressure over Southern California will move west towards the Pacific. A trough of low pressure over the Pacific Northwest will help push temperatures down rather sharply, with afternoon highs almost below average for most of the County.

The high pressure will rebound into the weekend. Temperatures will trend upwards, with slightly above average temperatures.

Temperatures early next week will be fairly average as weak ridging takes over. 

Microclimate Forecast - Coast & Inland
KFMB Weather
Microclimate Forecast - Mountain & Desert
KFMB Weather