SEA-TAC, WASHINGTON

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Elevation: 137 meters Latitude: 47 27N Longitude: 122 18W

WEATHER

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Number of Records: 224,582; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - 18 DECEMBER, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	8 ^°C	9.4 ^°C (1:53 pm)	6.7 ^°C (5:53 am)
Dewpoint	5.7 ^°C	8 ^°C (11:05 pm)	3.3 ^°C (9:53 am)
Humidity	86 ^%	93 ^% (12:05 am)	73 ^% (9:53 am)
Barometer	1011.9 ^hPa	1015.2 hPa (2:53 am)	1006.8 hPa (9:53 pm)
Wind Speed	11.1 ^km/h	18.5 ^km/h (4:53 pm)

Weather Element	Average
Visibility	12.1 ^km
Wind Direction	SSE (147.6 °)

Weather Element	Total
Precipitation	14.73 ^mm
Heating Degree Days	10.3 (Base 18.3)

Averaged from 29 records on 18 December, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 18 DECEMBER, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Precipitation	Events	Conditions
12:05 AM	7 ^°C	6 ^°C	93 ^%	1013.5 hPa	1.6 ^km	South (170°)	5.6 ^km/h	0 mm		Overcast
12:53 AM	7.2 ^°C	6.1 ^°C	93 ^%	1014.6 hPa	1.6 ^km	South (180°)	7.4 ^km/h	0.25 mm	Rain	Light Rain
1:53 AM	7.2 ^°C	6.1 ^°C	93 ^%	1014.6 hPa	1.6 ^km	SSE (160°)	9.3 ^km/h	1.27 mm	Rain	Light Rain
2:53 AM	7.2 ^°C	6.1 ^°C	93 ^%	1015.2 hPa	11.3 ^km	South (180°)	11.1 ^km/h	0.25 mm		Overcast
3:15 AM	7 ^°C	6 ^°C	93 ^%	1014.2 hPa	6.4 ^km	South (180°)	13 ^km/h	0 mm		Light Drizzle
3:40 AM	7 ^°C	6 ^°C	93 ^%	1014.2 hPa	1.3 ^km	SSE (160°)	11.1 ^km/h	0 mm		Overcast
3:53 AM	7.2 ^°C	6.1 ^°C	93 ^%	1014.9 hPa	4.8 ^km	SSE (150°)	9.3 ^km/h	0 mm		Overcast
4:53 AM	7.2 ^°C	5.6 ^°C	90 ^%	1014.6 hPa	16.1 ^km	SE (140°)	7.4 ^km/h			Overcast
5:53 AM	6.7 ^°C	5.6 ^°C	93 ^%	1014.6 hPa	16.1 ^km	SSE (150°)	7.4 ^km/h			Overcast
6:53 AM	7.2 ^°C	5 ^°C	86 ^%	1014.6 hPa	16.1 ^km	ESE (110°)	7.4 ^km/h			Overcast
7:53 AM	7.2 ^°C	5.6 ^°C	90 ^%	1014.6 hPa	16.1 ^km	ESE (120°)	5.6 ^km/h			Overcast
8:53 AM	6.7 ^°C	4.4 ^°C	85 ^%	1014.2 hPa	16.1 ^km	SSE (150°)	9.3 ^km/h			Overcast
9:53 AM	7.8 ^°C	3.3 ^°C	73 ^%	1014.2 hPa	16.1 ^km	ESE (110°)	14.8 ^km/h			Overcast
10:53 AM	8.3 ^°C	3.9 ^°C	74 ^%	1013.5 hPa	16.1 ^km	ESE (110°)	11.1 ^km/h	0 mm		Overcast
11:53 AM	8.3 ^°C	5 ^°C	80 ^%	1012.5 hPa	16.1 ^km	SE (130°)	9.3 ^km/h	0.51 mm	Rain	Light Rain
12:53 PM	8.9 ^°C	5 ^°C	77 ^%	1011.2 hPa	16.1 ^km	ESE (120°)	11.1 ^km/h	0 mm	Rain	Light Rain
1:53 PM	9.4 ^°C	5 ^°C	74 ^%	1010.8 hPa	16.1 ^km	SE (140°)	11.1 ^km/h	0 mm		Overcast
2:53 PM	8.9 ^°C	6.1 ^°C	83 ^%	1010.8 hPa	11.3 ^km	South (190°)	7.4 ^km/h	0.25 mm	Rain	Light Rain
3:53 PM	8.9 ^°C	6.7 ^°C	86 ^%	1010.2 hPa	8 ^km	SE (130°)	14.8 ^km/h	0.76 mm	Rain	Light Rain
4:53 PM	8.9 ^°C	6.1 ^°C	83 ^%	1009.1 hPa	16.1 ^km	ESE (110°)	18.5 ^km/h	0.76 mm	Rain	Light Rain
5:53 PM	8.3 ^°C	5 ^°C	80 ^%	1008.5 hPa	16.1 ^km	ESE (110°)	18.5 ^km/h	0 mm	Rain	Light Rain
6:53 PM	8.3 ^°C	4.4 ^°C	77 ^%	1008.1 hPa	16.1 ^km	ESE (110°)	16.7 ^km/h	0.76 mm		Overcast
7:53 PM	8.3 ^°C	4.4 ^°C	77 ^%	1007.8 hPa	16.1 ^km	ESE (110°)	16.7 ^km/h	2.03 mm	Rain	Light Rain
8:53 PM	8.3 ^°C	5.6 ^°C	83 ^%	1007.5 hPa	16.1 ^km	ESE (120°)	11.1 ^km/h	1.27 mm	Rain	Light Rain
9:53 PM	8 ^°C	6 ^°C	87 ^%	1006.8 hPa	14.5 ^km	SE (130°)	9.3 ^km/h		Rain	Light Rain
10:53 PM	8.9 ^°C	7.2 ^°C	89 ^%	1009.1 hPa	8 ^km	SW (220°)	13 ^km/h	1.78 mm	Rain	Rain
11:05 PM	9 ^°C	8 ^°C	93 ^%	1008.5 hPa	6.4 ^km	SSW (210°)	11.1 ^km/h	1.02 mm	Rain	Rain
11:22 PM	9 ^°C	8 ^°C	93 ^%	1008.5 hPa	16.1 ^km	South (190°)	13 ^km/h	1.78 mm	Rain	Light Rain
11:53 PM	9.4 ^°C	7.8 ^°C	90 ^%	1009.5 hPa	16.1 ^km	South (190°)	11.1 ^km/h	2.03 mm	Rain	Light Rain

Hourly data recorded from KSEA, located 0 kilometers away from Sea-Tac, Washington