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 - SEPTEMBER 1, 2014

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	78.5 ^°F	87.8 ^°F (3:11 pm)	72 ^°F (8:52 am)
Dewpoint	71.9 ^°F	73 ^°F (9:52 am)	70 ^°F (12:52 am)
Humidity	81.5 ^%	100 ^% (5:52 am)	57 ^% (10:52 am)
Barometer	29.99 ⁱⁿ	30.04 ⁱⁿ (9:52 am)	29.94 ⁱⁿ (3:52 am)
Wind Speed	3.2 ^mph	15 ^mph (9:52 am)
Wind Gust		21.9 ^mph (9:52 am)

Weather Element	Average
Visibility	10 ^mi
Wind Direction	ESE (120 °)

Weather Element	Total
Precipitation	0.01 ⁱⁿ
Cooling Degree Days	14.9 (Base 65)
Growing Degree Days	29.9 (Base 50)

Averaged from 26 records on September 1, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - SEPTEMBER 1, 2014

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	72.0 ^°F	72.0 ^°F	100 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
1:52 AM	72.0 ^°F	72.0 ^°F	100 ^%	30.02 ⁱⁿ	10.0 ^mi	South (180°)	3.5 ^mph				Mostly Cloudy
2:52 AM	73.0 ^°F	72.0 ^°F	96 ^%	30.02 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
3:52 AM	72.0 ^°F	71.1 ^°F	97 ^%	30.01 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
4:52 AM	72.0 ^°F	71.1 ^°F	97 ^%	30.01 ⁱⁿ	10.0 ^mi	Calm					Overcast
5:52 AM	72.0 ^°F	71.1 ^°F	97 ^%	30.02 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
6:52 AM	72.0 ^°F	71.1 ^°F	97 ^%	30.04 ⁱⁿ	10.0 ^mi	Calm			0.00 ⁱⁿ	Rain	Light Rain
7:52 AM	73.0 ^°F	72.0 ^°F	96 ^%	30.04 ⁱⁿ	10.0 ^mi	South (190°)	4.6 ^mph		0.00 ⁱⁿ		Mostly Cloudy
8:52 AM	75.9 ^°F	72.0 ^°F	87 ^%	30.03 ⁱⁿ	10.0 ^mi	SSW (200°)	5.8 ^mph				Mostly Cloudy
9:52 AM	78.1 ^°F	73.0 ^°F	84 ^%	30.02 ⁱⁿ	10.0 ^mi	WSW (240°)	8.1 ^mph				Scattered Clouds
10:52 AM	80.6 ^°F	71.6 ^°F	74 ^%	30.02 ⁱⁿ	10.0 ^mi	SSW (200°)	5.8 ^mph				Scattered Clouds
11:52 AM	84.0 ^°F	72.0 ^°F	67 ^%	30.01 ⁱⁿ	10.0 ^mi	WSW (250°)	5.8 ^mph				Mostly Cloudy
12:52 PM	84.9 ^°F	71.1 ^°F	63 ^%	29.99 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
1:52 PM	86.0 ^°F	71.1 ^°F	61 ^%	29.98 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
2:52 PM	87.1 ^°F	70.0 ^°F	57 ^%	29.97 ⁱⁿ	10.0 ^mi	Calm					Mostly Cloudy
3:11 PM	87.8 ^°F	71.6 ^°F	58 ^%	29.97 ⁱⁿ	10.0 ^mi	Calm				Thunderstorm	Thunderstorm
3:37 PM	78.8 ^°F	71.6 ^°F	78 ^%	29.98 ⁱⁿ	10.0 ^mi	North (350°)	15.0 ^mph	21.9 ^mph	0.00 ⁱⁿ	Rain-Thunderstorm	Light Thunderstorms and Rain
3:52 PM	79.0 ^°F	72.0 ^°F	79 ^%	29.98 ⁱⁿ	10.0 ^mi	North (360°)	9.2 ^mph		0.01 ⁱⁿ		Mostly Cloudy
4:52 PM	82.9 ^°F	72.0 ^°F	69 ^%	29.96 ⁱⁿ	10.0 ^mi	Calm					Scattered Clouds
5:52 PM	84.9 ^°F	72.0 ^°F	65 ^%	29.94 ⁱⁿ	10.0 ^mi	South (180°)	4.6 ^mph				Scattered Clouds
6:52 PM	84.0 ^°F	73.0 ^°F	69 ^%	29.96 ⁱⁿ	10.0 ^mi	Calm					Scattered Clouds
7:52 PM	79.0 ^°F	73.0 ^°F	82 ^%	29.95 ⁱⁿ	10.0 ^mi	SSE (160°)	5.8 ^mph				Scattered Clouds
8:52 PM	78.1 ^°F	73.0 ^°F	84 ^%	29.96 ⁱⁿ	10.0 ^mi	South (190°)	3.5 ^mph				Scattered Clouds
9:52 PM	78.1 ^°F	73.0 ^°F	84 ^%	29.96 ⁱⁿ	10.0 ^mi	SSE (160°)	3.5 ^mph				Scattered Clouds
10:52 PM	77.0 ^°F	73.0 ^°F	88 ^%	29.96 ⁱⁿ	10.0 ^mi	South (180°)	4.6 ^mph				Scattered Clouds
11:52 PM	75.9 ^°F	73.0 ^°F	91 ^%	29.97 ⁱⁿ	10.0 ^mi	West (280°)	3.5 ^mph				Scattered Clouds

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