Where is 650 area code?
650 – San Mateo, CA
What area code is 650
In San Mateo the summers are long, pleasant, dry, and mostly clear, and the winters are short, cold, wet and partly cloudy. In the course of the year the temperature ranges between 7 °C and 23 °C and is rarely below 3 °C or above 29 °C.
Due to the tourism-assessment is at the end of June until the end of September is the best time of year to visit San Mateo for warm weather activities.