A handful of temperature records were broken or tied in San Diego County Monday, but the unseasonable heat wave began to taper off and much cooler weather should prevail by mid-week.
In Escondido, a high of 92 degrees topped the previous record of 90, set 101 years ago; an 89-degree high in Chula Vista was one degree higher than the record set one year ago; and a record high of 85 degrees at the Oceanside Harbor surpassed the 84-degree high on this date in 1918, according to the National Weather Service. An 89-degree high in Vista tied the record set last year.
High pressure combined with weak offshore flow around the county over the weekend translated to sweltering heat, which crushed heat records by more than a dozen degrees in some areas. But forecasters said increasing onshore flow would usher in a cooling trend — expected to return temperatures to around average — by Wednesday.
Along with the milder weather, forecasters said scattered showers could be possible in the mountains Wednesday and Thursday.
