PORT HEIDEN, ALASKA

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Elevation: 28 meters Latitude: 56 58N Longitude: 158 39W

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DAILY WEATHER AVERAGE - 18 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	8.2 ^°C	11.4 ^°C	4.3 ^°C	17 ^°C (2010)	(2015)
Dewpoint	2.4 ^°C	6.6 ^°C	1.7 ^°C	12 ^°C (2007)	-5 ^°C (1997)
Humidity	70.2 ^%	86 ^%	56.5 ^%		4 ^% (1997)
Barometer	1001.7 ^hPa	1006.4 ^hPa	998 ^hPa	1020 ^hPa (2002)	977.3 ^hPa (1998)
Wind Speed	25.9 ^km/h	40.7 ^km/h		76 ^km/h (1998)
Wind Gust		54.2 ^km/h		98.2 ^km/h (1998)
Precipitation	7.62 ^mm			13.97 ^mm (1999)

Weather Element	Average
Visibility	18.7 ^km
Wind Direction	SSW (190.1 °)

Weather Element	Total
Heating Degree Days	10.5 (Base 18.3)
Growing Degree Days	2.2 (Base 10)

Total Years on Record: 20

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