A deepening marine layer will bring a slight cooling trend to the Inland area through Thursday and breezy weather to the mountains, but daytime valley temperatures will rebound this weekend to about 80, according to the National Weather Service.

No hazardous weather is in the forecast.

Pre-dawn temperatures were decidedly temperate this morning, with a 6 a.m. reading of 54 degrees in Palm Springs. Most Inland communities were in the 40s, including Chino, Ontario Sun City, Murrieta, Temecula, Wrightwood and Victorville.

A few areas were decidedly chillier. It was 38 degrees in Corona and Angelus Oaks and 34 at March Air Reserve Base. In Big Bear City, it was 25 degrees. By comparison, it was 20 at the Grand Canyon and 46 in Avalon on Catalina Island.

The region’s high-temperature records for this date was set in 1997 when it was 97 degrees in both Palm Springs and Riverside. The cold-temperature records were set in 1963, when it was 2 degrees in Big Bear Lake and 10 degrees in Idyllwild.

—Richard Brooks
rbrooks@PE.com

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