Schools in the Spencer Valley School District closed at noon Thursday due to inclement weather and hazardous road conditions.

Rain-starved San Diego County will get hit by a cold and blustery late winter storm Wednesday night that could drop half an inch of rain at the coast and more than twice that in the mountains by the time it clears off to the east on Friday, the National Weather Service says.

"This system is expected to be quite cold aloft which increases the chances of thunderstorms across the area, leading to an increased threat of flooding."