Breaking News
More () »

CBS News 8 - San Diego, CA News Station - KFMB Channel 8 | cbs8.com

Triple digit temperatures as heat wave begins to peak

Temperatures quickly heat up Tuesday and Wednesday, 10°-20° above average by Wednesday. The heat will peak midweek and linger for the remainder of the week.

SAN DIEGO — Tuesday afternoon high temperatures will be above seasonal norms.

  • Coastal highs 79°-96°, normal around 74°.
  • Inland highs 97°-105°, normal around 85°.
  • Mountain highs 84°-95°, normal around 76°.
  • Desert highs 101°-106°, normal around 96°.

At the beaches, water temperature is 66°-70° with a moderate rip current risk. Wave heights are 2'-4' from a building south-southwest swell. The UV index will peak at 7 (high). 

Humidity in the County will be moderate. Coastal areas will see dew points near the mid 60s, inland and mountain dew points will be in the 50s. Desert dew points are expected to be in the 30s.


Credit: KFMB Weather

A Red Flag Warning has been issued for inland and mountain areas until 5 PM Tuesday. Low relative humidity will be 8-12%. East winds 15-25 mph with gusts as high as 40 mph in the windiest locations. Conditions will be ideal for rapid fire spread.

Credit: KFMB Weather

A Heat Advisory has been issued for coastal and inland areas from 10 AM Tuesday until 8 PM Thursday. Afternoon high temperatures will be in the 80s near the beach and 95°-108° inland through midweek. Hot temperatures will increase the likelihood of heat related illnesses. Drink plenty of water and stay cool.


High pressure will send temperatures 10-20 degrees above normal this week. Hot temperatures will last through Thursday, with temperatures well over 100° possible inland.

The high will remain strong but shift a little north By Wednesday. This will weaken offshore winds, but the vast size of the high keeps temperatures very warm.

The high pressure will break down towards the end of the week. Slow cooling trend will bring little relief over the weekend, temperatures will remain above average. There is a chance we will return to near average conditions early next week.

Credit: KFMB Weather
Credit: KFMB Weather