With summer beginning at 7:57 a.m. Wednesday, there was not much change in high temperatures in San Diego County, but a trough moving inland across California Thursday will bring cooling for Thursday and Friday, the National Weather Service said.
The low-pressure system will deepen the marine layer west of the mountains and bring strong, gusty southwest to west winds late Thursday through early Friday in the mountains and deserts — strongest Thursday night, according to meteorologists.
Along the coast Thursday, it was expected to be partly cloudy with high temperatures around 70, the NWS said. The western valleys were expected to be mostly sunny with highs from 71 to 76. It will be mostly sunny in the mountains with highs from 67 to 77. The deserts were expected to be mostly sunny with highs from 92 to 97.
A warming trend for Saturday through Monday was forecast with additional warming due to a ridge building in from the east for the latter half of next week.
Occasional west-northwest winds were expected to gust near 20 knots in the outer coastal waters each afternoon and evening through early next week.
City News Service contributed to this article.