Right on schedule, the Winter Solstice brings the first Freeze Warning of the season for San Jose and surrounding areas … The U.S. National Weather Service has issued a Freeze Warning for San Jose, and most of Northern California:

…THE FIRST OFFICIAL NIGHT OF WINTER WILL BE A COLD ONE..

A COLD AIRMASS WILL REMAIN OVER THE BAY AREA AS HIGH PRESSURE CONTINUES TO BUILD OVERHEAD TONIGHT. AS A RESULT.. SKIES WILL BE CLEAR WITH LIGHT WINDS ALLOWING FOR FREEZING TEMPERATURES.

…FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY..

THE NATIONAL WEATHER SERVICE IN MONTEREY HAS UPGRADED THE FROST ADVISORY TO A FREEZE WARNING…WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY.

THE COMBINATION OF MOSTLY CLEAR SKIES AND LIGHT SURFACE WINDS WILL HELP TO PRODUCE FREEZING TEMPERATURES BY SATURDAY MORNING. OVERNIGHT TEMPERATURES WILL FALL TO NEAR 30 DEGREES IN THE SANTA CLARA VALLEY AFTER MIDNIGHT.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION.