MCDONALD OBSERVATORY, TEXAS

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Elevation: 1756 meters Latitude: 30 32N Longitude: 104 08W

WEATHER

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DAILY WEATHER AVERAGE - 20 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	4.4 ^°C	15.1 ^°C	-4.5 ^°C	23 ^°C (2010)	-12 ^°C (2002)
Dewpoint	-6.4 ^°C	-2.4 ^°C	-10.6 ^°C	11 ^°C (2013)	-20 ^°C (2008)
Humidity	52.9 ^%	80 ^%	25.5 ^%		11 ^% (2008)
Barometer	1020 ^hPa	1022.7 ^hPa	1017.3 ^hPa	1029.5 ^hPa (2001)	1006.4 ^hPa (2013)
Wind Speed	12.7 ^km/h	32.8 ^km/h		51.8 ^km/h (2006)
Wind Gust		45.2 ^km/h		62.9 ^km/h (2006)
Precipitation	23.11 ^mm			34.04 ^mm (2013)

Weather Element	Average
Visibility	15.9 ^km
Wind Direction	SSE (156.5 °)

Weather Element	Total
Heating Degree Days	13.1 (Base 18.3)
Growing Degree Days	0.8 (Base 10)

Total Years on Record: 20

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