RIVERSIDE (CBSLA.com) — Overnight temperatures in the 30s may cause frost to develop in parts of Riverside County.

According to the National Weather Service, a frost advisory was in effect until 8 a.m. for Riverside and the surrounding valleys.

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Meteorologists said the lowest temperatures were expected in the Inland Empire’s southern reaches, including Temecula.

Residents in colder areas have been urged to make sure pets have a warm place to stay.

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Outdoor plans that are sensitive to cold should remain covered.

Forecasters expect the cold weather to continue throughout the remainder of the week.

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