The rain was brought on by upper low pressure and is expected to stick around through Tuesday, according to the National Weather Service. The low pressure system also will generate gusty winds in the mountains and deserts through late Monday night, the weather service reported.
Gusts of 62 mph were recorded at Monument Peak near Mount Laguna about 1 a.m., the NWS reported.
A NWS wind advisory in effect in the mountains and deserts is scheduled to expire at 3 a.m. Tuesday.
During the advisory period, areas of west winds of up to 25 mph with gusts to 45 mph are expected. The winds should decrease some this morning but pick up again this afternoon and evening, then gradually decrease overnight.
Forecasters said blowing dust and sand could reduce visibility. The winds also may make driving difficult, especially for motorists with high profile vehicles, according to NWS forecaster.