SAN DIEGO (FOX 5/KUSI) — At long last, San Diego received its first significant rainfall — and snow — in months over the weekend. The precipitation, which was brought on by a cold low pressure system, was a much-needed break from stubborn arid conditions primed for potentially erratic fire behavior.

Scattered showers are expected early this week for San Diego County, with a slight chance of thunderstorms in the afternoon into Monday morning for the coast, valleys and mountains, forecasters said Sunday.

Scattered showers are expected early this week for San Diego County, with a slight chance of thunderstorms in the afternoon into Monday morning for the coast, valleys and mountains. A winter weather advisory will remain in effect until at least 4 p.m. Monday, with chances of snowfall for county mountains, according to the National Weather Service.

The National Weather Service office in San Diego is forecasting cooler temperatures and widespread rain continuing into the first part of the week.

San Diego County expects rain and mountain snow after severe Santa Ana winds and wildfires across Southern California, marking a hopeful turn in a dry water year.

Depending on where you reside in San Diego County, you may need your rain jacket or snow boots Sunday based on the weather forecast.

Overnight, isolated lightning strikes were reported, primarily over coastal waters and nearby land areas, but thunderstorm chances were expected to decrease by Monday morning.