The National Weather Service announced that numerous San Diego County cities/towns broke daily temperature records Monday.
According to the NWS, the following locations broke or tied maximum temperature records for June 20:
| LOCATION | NEW RECORD | OLD RECORD | PERIOD OF RECORD |
| RAMONA | 109 | 106 IN 2008 | 1974 |
| RIVERSIDE | 114 | 110 IN 2008 | 1893 |
| PALM SPRINGS | 122 | 118 IN 1929 | 1893 |
| THERMAL | 121 | 118 IN 2008 | 1950 |
| CHULA VISTA | 91 | 85 IN 2008 | 1918 |
| ESCONDIDO | 106 | 104 IN 1973 | 1893 |
| ALPINE | 107 (TIED) | 107 IN 1973 | 1951 |
| EL CAJON | 107 | 94 IN 2007 | 1979 |
| IDYLLWILD | 97 | 95 IN 2001 | 1943 |
| PALOMAR MOUNTAIN | 96 | 92 IN 2015 | 1901 |
| CAMPO | 110 | 105 IN 2008 | 1948 |
| INDIO | 120 | 116 IN 1929 | 1894 |
| BORREGO | 118* | 116 IN 2008 | 1942 |
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