
The cooler-than-normal temperatures that coastal San Diego County cities have experienced this month might give away to noticeably warmer weather early next week, the National Weather Service says.
Long-term forecast models suggest that a major high pressure system will move into California, lifting temperatures across much of the state. The warmest temperatures are expected north of Los Angeles. But San Diego could reach its seasonal high of 70 as early as Tuesday and rise a bit above that level as the week goes along.
“We have to keep a watch of whether cooler air from the south will come up and affect the coast,” said Adam Roser, a weather service forecaster.
The daytime high at San Diego International Airport has reached 70 only once this month — on May 18. So far, the average May temperature is 63.2, which is 1.5 degrees below average. The temperature at the airport was two degrees below normal in April.