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 - 20 AUGUST, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	17.1 ^°C	21.1 ^°C (12:53 pm)	14.4 ^°C (8:53 am)
Dewpoint	10.6 ^°C	11.7 ^°C (12:53 am)	10 ^°C (12:53 pm)
Humidity	66 ^%	78 ^% (7:53 am)	53 ^% (2:53 pm)
Barometer	1015.2 ^hPa	1017.3 hPa (4:53 pm)	1011.9 hPa (6:53 pm)
Wind Speed	13.7 ^km/h	18.5 ^km/h (10:53 pm)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	SSW (210.7 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	0.6 (Base 18.3)
Growing Degree Days	7.8 (Base 10)

Averaged from 27 records on 20 August, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 20 AUGUST, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:53 AM	15.6 ^°C	10 ^°C	69 ^%	1011.9 hPa	16.1 ^km	SW (230°)	14.8 ^km/h	Mostly Cloudy
1:53 AM	15 ^°C	10.6 ^°C	75 ^%	1012.5 hPa	16.1 ^km	SSW (200°)	11.1 ^km/h	Mostly Cloudy
2:53 AM	15 ^°C	10.6 ^°C	75 ^%	1012.5 hPa	16.1 ^km	SSW (200°)	9.3 ^km/h	Mostly Cloudy
3:06 AM	15 ^°C	11 ^°C	77 ^%	1012.2 hPa	16.1 ^km	South (170°)	9.3 ^km/h	Mostly Cloudy
3:53 AM	15 ^°C	10.6 ^°C	75 ^%	1013.2 hPa	16.1 ^km	South (180°)	11.1 ^km/h	Overcast
4:53 AM	14.4 ^°C	10.6 ^°C	78 ^%	1013.2 hPa	16.1 ^km	South (180°)	16.7 ^km/h	Overcast
5:53 AM	15 ^°C	10.6 ^°C	75 ^%	1013.9 hPa	16.1 ^km	SSW (200°)	13 ^km/h	Overcast
6:53 AM	15 ^°C	10 ^°C	72 ^%	1014.6 hPa	16.1 ^km	South (190°)	16.7 ^km/h	Overcast
7:17 AM	15 ^°C	11 ^°C	77 ^%	1014.2 hPa	16.1 ^km	SSE (160°)	16.7 ^km/h	Overcast
7:53 AM	15 ^°C	10 ^°C	72 ^%	1015.2 hPa	16.1 ^km	South (180°)	9.3 ^km/h	Overcast
8:53 AM	15.6 ^°C	10 ^°C	69 ^%	1015.2 hPa	16.1 ^km	South (190°)	14.8 ^km/h	Overcast
9:53 AM	16.7 ^°C	10 ^°C	65 ^%	1015.9 hPa	16.1 ^km	SSW (210°)	14.8 ^km/h	Overcast
10:26 AM	18 ^°C	10 ^°C	59 ^%	1015.2 hPa	16.1 ^km	SW (220°)	18.5 ^km/h	Mostly Cloudy
10:53 AM	18.3 ^°C	10.6 ^°C	61 ^%	1015.9 hPa	16.1 ^km	SSW (210°)	16.7 ^km/h	Mostly Cloudy
11:53 AM	18.3 ^°C	10 ^°C	58 ^%	1016.3 hPa	16.1 ^km	SW (230°)	16.7 ^km/h	Overcast
12:53 PM	18.9 ^°C	10 ^°C	56 ^%	1016.3 hPa	16.1 ^km	SW (230°)	16.7 ^km/h	Overcast
1:53 PM	18.9 ^°C	10.6 ^°C	59 ^%	1016.6 hPa	16.1 ^km	WSW (240°)	18.5 ^km/h	Mostly Cloudy
2:53 PM	20 ^°C	11.1 ^°C	56 ^%	1016.3 hPa	16.1 ^km	West (270°)	16.7 ^km/h	Mostly Cloudy
3:53 PM	21.1 ^°C	11.1 ^°C	53 ^%	1015.9 hPa	16.1 ^km	SW (220°)	13 ^km/h	Mostly Cloudy
4:53 PM	21.1 ^°C	11.1 ^°C	53 ^%	1015.9 hPa	16.1 ^km	WSW (240°)	11.1 ^km/h	Scattered Clouds
5:53 PM	21.1 ^°C	11.7 ^°C	55 ^%	1015.9 hPa	16.1 ^km	SW (230°)	14.8 ^km/h	Scattered Clouds
6:53 PM	20 ^°C	11.1 ^°C	56 ^%	1015.6 hPa	16.1 ^km	SW (220°)	13 ^km/h	Scattered Clouds
7:53 PM	19.4 ^°C	11.1 ^°C	59 ^%	1015.6 hPa	16.1 ^km	SW (220°)	7.4 ^km/h	Scattered Clouds
8:53 PM	18.3 ^°C	10.6 ^°C	61 ^%	1016.3 hPa	16.1 ^km	SSW (210°)	9.3 ^km/h	Scattered Clouds
9:53 PM	17.2 ^°C	10.6 ^°C	65 ^%	1016.6 hPa	16.1 ^km	SW (220°)	14.8 ^km/h	Mostly Cloudy
10:53 PM	15 ^°C	10.6 ^°C	75 ^%	1017.3 hPa	16.1 ^km	SW (220°)	11.1 ^km/h	Partly Cloudy
11:53 PM	14.4 ^°C	10.6 ^°C	78 ^%	1017.3 hPa	16.1 ^km	SW (220°)	13 ^km/h	Partly Cloudy

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