SAN MATEO, CALIFORNIA

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Elevation: 0 meters Latitude: 37 37N Longitude: 122 23W

WEATHER

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DAILY WEATHER AVERAGE - 20 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	10.4 ^°C	13.4 ^°C	7.3 ^°C	20.6 ^°C (1999)	2.8 ^°C (2008)
Dewpoint	6.5 ^°C	9.2 ^°C	3.7 ^°C	15 ^°C (2014)	-7.8 ^°C (2011)
Humidity	78.6 ^%	92.2 ^%	61.5 ^%		30 ^% (2011)
Barometer	1018.6 ^hPa	1021 ^hPa	1016.6 ^hPa	1030.1 ^hPa (2008)	1006.4 ^hPa (2010)
Wind Speed	11.1 ^km/h	23.8 ^km/h		48.1 ^km/h (1998)
Wind Gust		44.4 ^km/h		59.2 ^km/h (1998)
Precipitation	9.14 ^mm			22.86 ^mm (2002)

Weather Element	Average
Visibility	14 ^km
Wind Direction	ESE (120.1 °)

Weather Element	Total
Heating Degree Days	8 (Base 18.3)
Growing Degree Days	1.8 (Base 10)

Total Years on Record: 20

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