HERNDON, VIRGINIA

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Elevation: 322 feet Latitude: 38 57N Longitude: 077 27W

WEATHER

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Number of Records: 213,900; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - AUGUST 31, 2015

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	77.9 ^°F	87.1 ^°F (5:52 pm)	70 ^°F (6:52 am)
Dewpoint	65.7 ^°F	68 ^°F (9:52 am)	62.1 ^°F (11:52 am)
Humidity	67.4 ^%	87 ^% (6:52 am)	48 ^% (5:52 pm)
Barometer	30.07 ⁱⁿ	30.11 ⁱⁿ (10:52 am)	30.03 ⁱⁿ (4:52 pm)
Wind Speed	3.8 ^mph	6.9 ^mph (9:52 am)

Weather Element	Average
Visibility	10 ^mi
Wind Direction	SSE (142.9 °)

Weather Element	Total
Precipitation	0.01 ⁱⁿ
Cooling Degree Days	13.6 (Base 65)
Growing Degree Days	28.6 (Base 50)

Averaged from 24 records on August 31, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - AUGUST 31, 2015

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Precipitation	Events	Conditions
12:52 AM	75.0 ^°F	66.0 ^°F	73 ^%	30.08 ⁱⁿ	10.0 ^mi	SSW (200°)	5.8 ^mph			Overcast
1:52 AM	73.9 ^°F	66.0 ^°F	76 ^%	30.08 ⁱⁿ	10.0 ^mi	South (190°)	3.5 ^mph			Overcast
2:52 AM	73.9 ^°F	66.0 ^°F	76 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm				Overcast
3:52 AM	73.0 ^°F	66.0 ^°F	79 ^%	30.06 ⁱⁿ	10.0 ^mi	South (180°)	3.5 ^mph			Overcast
4:52 AM	73.0 ^°F	66.0 ^°F	79 ^%	30.06 ⁱⁿ	10.0 ^mi	SSW (200°)	4.6 ^mph			Overcast
5:52 AM	73.0 ^°F	66.0 ^°F	79 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm				Overcast
6:52 AM	70.0 ^°F	66.0 ^°F	87 ^%	30.08 ⁱⁿ	10.0 ^mi	Calm				Overcast
7:52 AM	73.0 ^°F	66.9 ^°F	81 ^%	30.09 ⁱⁿ	10.0 ^mi	South (190°)	5.8 ^mph	0.00 ⁱⁿ	Rain	Light Rain
8:52 AM	73.9 ^°F	66.9 ^°F	79 ^%	30.09 ⁱⁿ	10.0 ^mi	Calm		0.01 ⁱⁿ		Mostly Cloudy
9:52 AM	78.1 ^°F	68.0 ^°F	71 ^%	30.10 ⁱⁿ	10.0 ^mi	NW (310°)	6.9 ^mph	0.00 ⁱⁿ		Overcast
10:52 AM	79.0 ^°F	66.9 ^°F	66 ^%	30.11 ⁱⁿ	10.0 ^mi	South (170°)	3.5 ^mph			Overcast
11:52 AM	82.0 ^°F	62.1 ^°F	51 ^%	30.10 ⁱⁿ	10.0 ^mi	Variable	3.5 ^mph			Overcast
12:52 PM	82.9 ^°F	63.0 ^°F	51 ^%	30.09 ⁱⁿ	10.0 ^mi	WSW (250°)	4.6 ^mph			Mostly Cloudy
1:52 PM	82.9 ^°F	64.9 ^°F	54 ^%	30.07 ⁱⁿ	10.0 ^mi	SSW (210°)	6.9 ^mph			Mostly Cloudy
2:52 PM	82.9 ^°F	66.0 ^°F	56 ^%	30.06 ⁱⁿ	10.0 ^mi	SW (220°)	6.9 ^mph			Mostly Cloudy
3:52 PM	86.0 ^°F	66.0 ^°F	51 ^%	30.05 ⁱⁿ	10.0 ^mi	Calm				Mostly Cloudy
4:52 PM	86.0 ^°F	64.9 ^°F	49 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm				Mostly Cloudy
5:52 PM	87.1 ^°F	64.9 ^°F	48 ^%	30.03 ⁱⁿ	10.0 ^mi	SSW (210°)	6.9 ^mph			Scattered Clouds
6:52 PM	84.0 ^°F	64.9 ^°F	53 ^%	30.03 ⁱⁿ	10.0 ^mi	South (180°)	5.8 ^mph			Clear
7:52 PM	80.1 ^°F	64.9 ^°F	60 ^%	30.03 ⁱⁿ	10.0 ^mi	South (180°)	4.6 ^mph			Scattered Clouds
8:52 PM	78.1 ^°F	66.0 ^°F	66 ^%	30.04 ⁱⁿ	10.0 ^mi	South (170°)	4.6 ^mph			Mostly Cloudy
9:52 PM	75.0 ^°F	66.0 ^°F	73 ^%	30.05 ⁱⁿ	10.0 ^mi	South (190°)	4.6 ^mph			Partly Cloudy
10:52 PM	73.0 ^°F	66.0 ^°F	79 ^%	30.06 ⁱⁿ	10.0 ^mi	South (190°)	3.5 ^mph			Partly Cloudy
11:52 PM	73.0 ^°F	66.9 ^°F	81 ^%	30.06 ⁱⁿ	10.0 ^mi	South (190°)	5.8 ^mph			Clear

Hourly data recorded from KIAD, located miles away from Herndon, Virginia