By John C. Toman. Posted April 24, 2012, 6:20 AM.

The work week started with light rain and drizzle in many Southern California locations, thanks to a low pressure system surging north from Mexico.

It also led to a relatively cool and cloudy spring day, with temperatures staying mostly in the lower 60's in the inland valleys, and a little warmer towards the coast.

Beaumont caught the most rainfall Monday morning, with 0.11". De Luz got 0.05", Fallbrook 0.04", French Valley 0.03", Riverside (Canyon Crest) 0.03", San Bernardino 0.02", Simi Valley 0.02", and San Diego (City Heights) 0.01".

Jim Sappington recorded 0.03" of drizzle in the Temecula Valley Wine Country.

Monday's low pressure system was a precursor to a much stronger system expected Wednesday in the region, which could partially tap some subtropical moisture and produce up to 0.25" to 0.50" of rainfall inland and up to an inch towards the coast.