What’S The Coldest It’S Been In San Bernardino?
17.0°F. The lowest recorded temperature in San Bernardino is 17.0°F (-8.3°C), which was recorded in January. How cold does it get in San Bernardino in the winter? In December, the coldest month of the year, the weather in San Bernardino is usually mild. The average temperature is of 12.5 °C (54 °F), with a minimum …