SAINT JOHN, CALIFORNIA

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Elevation: 46 meters Latitude: 39 42N Longitude: 122 00W

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DAILY WEATHER AVERAGE - 18 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	7.5 ^°C	10.5 ^°C	5 ^°C	13 ^°C (2011)	0 ^°C (2011)
Dewpoint	4.6 ^°C	6.8 ^°C	2.4 ^°C	12 ^°C (2010)	-5 ^°C (2012)
Humidity	82.6 ^%	96.3 ^%	61.9 ^%		37 ^% (2012)
Barometer	1019.6 ^hPa	1022.4 ^hPa	1017.9 ^hPa	1031.2 ^hPa (2000)	1003.4 ^hPa (2010)
Wind Speed	14.3 ^km/h	24.9 ^km/h		48.1 ^km/h (2010)
Wind Gust		52.3 ^km/h		64.9 ^km/h (2005)
Precipitation	11.68 ^mm			21.84 ^mm (2015)

Weather Element	Average
Visibility	37.3 ^km
Wind Direction	SE (139.2 °)

Weather Element	Total
Heating Degree Days	10.6 (Base 18.3)
Growing Degree Days	0.8 (Base 10)

Total Years on Record: 21

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