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 - 21 AUGUST, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	15.6 ^°C	20.6 ^°C (12:53 pm)	11 ^°C (6:32 am)
Dewpoint	10.1 ^°C	11.1 ^°C (12:53 pm)	9 ^°C (1:53 am)
Humidity	71.3 ^%	90 ^% (2:53 am)	51 ^% (7:53 pm)
Barometer	1017.3 ^hPa	1018.6 hPa (3:53 pm)	1015.9 hPa (8:53 pm)
Wind Speed	6.6 ^km/h	11.1 ^km/h (2:37 am)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	SSE (155 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	2.6 (Base 18.3)
Growing Degree Days	5.8 (Base 10)

Averaged from 28 records on 21 August, 2014

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WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 21 AUGUST, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:53 AM	13.9 ^°C	10.6 ^°C	81 ^%	1017.3 hPa	16.1 ^km	SSW (210°)	5.6 ^km/h	Clear
1:53 AM	13.3 ^°C	10 ^°C	80 ^%	1017.6 hPa	16.1 ^km	SW (220°)	7.4 ^km/h	Clear
2:53 AM	12.8 ^°C	10 ^°C	83 ^%	1017.9 hPa	16.1 ^km	Calm		Clear
3:53 AM	12.2 ^°C	10.6 ^°C	90 ^%	1017.9 hPa	16.1 ^km	SSW (210°)	5.6 ^km/h	Mostly Cloudy
4:53 AM	12.2 ^°C	10 ^°C	86 ^%	1017.6 hPa	16.1 ^km	South (190°)	7.4 ^km/h	Scattered Clouds
5:33 AM	12 ^°C	10 ^°C	88 ^%	1017.3 hPa	16.1 ^km	South (170°)	5.6 ^km/h	Mostly Cloudy
5:53 AM	11.7 ^°C	10 ^°C	89 ^%	1017.6 hPa	16.1 ^km	SSE (160°)	7.4 ^km/h	Mostly Cloudy
6:32 AM	11 ^°C	9 ^°C	88 ^%	1017.6 hPa	16.1 ^km	South (170°)	7.4 ^km/h	Mostly Cloudy
6:53 AM	11.7 ^°C	10 ^°C	89 ^%	1017.9 hPa	16.1 ^km	South (170°)	5.6 ^km/h	Mostly Cloudy
7:27 AM	12 ^°C	10 ^°C	88 ^%	1017.9 hPa	16.1 ^km	South (170°)	7.4 ^km/h	Overcast
7:53 AM	12.8 ^°C	10.6 ^°C	86 ^%	1018.6 hPa	16.1 ^km	South (170°)	7.4 ^km/h	Mostly Cloudy
8:53 AM	13.3 ^°C	10 ^°C	80 ^%	1018.6 hPa	16.1 ^km	South (190°)	11.1 ^km/h	Overcast
9:53 AM	13.9 ^°C	9.4 ^°C	74 ^%	1018.6 hPa	16.1 ^km	SSW (210°)	11.1 ^km/h	Overcast
10:53 AM	14.4 ^°C	9.4 ^°C	72 ^%	1018.6 hPa	16.1 ^km	SW (220°)	9.3 ^km/h	Overcast
11:53 AM	15.6 ^°C	9.4 ^°C	67 ^%	1018.3 hPa	16.1 ^km	Calm		Mostly Cloudy
12:36 PM	18 ^°C	9 ^°C	56 ^%	1017.6 hPa	16.1 ^km	Variable	5.6 ^km/h	Scattered Clouds
12:53 PM	17.8 ^°C	9.4 ^°C	58 ^%	1017.9 hPa	16.1 ^km	SSE (160°)	5.6 ^km/h	Scattered Clouds
1:53 PM	18.9 ^°C	9.4 ^°C	54 ^%	1017.9 hPa	16.1 ^km	SW (220°)	9.3 ^km/h	Mostly Cloudy
2:53 PM	20 ^°C	10 ^°C	52 ^%	1017.3 hPa	16.1 ^km	Variable	7.4 ^km/h	Scattered Clouds
3:53 PM	20 ^°C	10.6 ^°C	55 ^%	1016.9 hPa	16.1 ^km	WSW (250°)	9.3 ^km/h	Scattered Clouds
4:53 PM	20.6 ^°C	10.6 ^°C	53 ^%	1016.3 hPa	16.1 ^km	SSW (210°)	9.3 ^km/h	Scattered Clouds
5:53 PM	20.6 ^°C	10 ^°C	51 ^%	1015.9 hPa	16.1 ^km	SSW (200°)	9.3 ^km/h	Scattered Clouds
6:53 PM	20 ^°C	10 ^°C	52 ^%	1015.9 hPa	16.1 ^km	SE (130°)	5.6 ^km/h	Scattered Clouds
7:53 PM	20 ^°C	10.6 ^°C	55 ^%	1015.9 hPa	16.1 ^km	Calm		Scattered Clouds
8:53 PM	18.3 ^°C	11.1 ^°C	63 ^%	1016.3 hPa	16.1 ^km	North (10°)	9.3 ^km/h	Scattered Clouds
9:53 PM	18.3 ^°C	10.6 ^°C	61 ^%	1016.3 hPa	16.1 ^km	North (360°)	7.4 ^km/h	Scattered Clouds
10:53 PM	16.7 ^°C	11.1 ^°C	70 ^%	1016.6 hPa	16.1 ^km	Calm		Partly Cloudy
11:53 PM	15 ^°C	10.6 ^°C	75 ^%	1016.6 hPa	16.1 ^km	NNW (340°)	5.6 ^km/h	Clear

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