ROCKVILLE, MARYLAND

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Elevation: 127 meters Latitude: 39 06N Longitude: 077 06W

WEATHER

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Number of Records: 200,544; Date Range: 10/17/07 - 3/22/16

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WEATHER ALMANAC - 21 AUGUST, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	22.6 ^°C	29 ^°C (1:15 pm)	17 ^°C (5:15 am)
Dewpoint	19.5 ^°C	22 ^°C (12:35 pm)	16 ^°C (5:15 am)
Humidity	83.7 ^%	94 ^% (12:35 am)	58 ^% (3:15 pm)
Barometer	1017.9 ^hPa	1019.3 hPa (7:35 am)	1016.9 hPa (3:15 pm)
Wind Speed	3.4 ^km/h	11.1 ^km/h (11:35 am)

Weather Element	Average
Visibility	12.4 ^km
Wind Direction	ESE (116.3 °)

Weather Element	Total
Precipitation	4.57 ^mm
Cooling Degree Days	4.7 (Base 18.3)
Growing Degree Days	13 (Base 10)

Averaged from 71 records on 21 August, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 21 AUGUST, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Precipitation	Events	Conditions
12:35 AM	18 ^°C	17 ^°C	94 ^%	1018.3 hPa	11.3 ^km	Calm				Clear
12:55 AM	19 ^°C	18 ^°C	94 ^%	1017.9 hPa	16.1 ^km	Calm				Clear
1:15 AM	19 ^°C	17 ^°C	88 ^%	1017.9 hPa	4.8 ^km	Calm				Clear
1:35 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	8 ^km	Calm				Clear
1:55 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	6.4 ^km	Calm				Clear
2:15 AM	19 ^°C	17 ^°C	88 ^%	1017.6 hPa	11.3 ^km	ESE (110°)	5.6 ^km/h			Clear
2:35 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	8 ^km	Calm				Clear
2:55 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	11.3 ^km	Calm				Clear
3:15 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	9.7 ^km	Calm				Clear
3:35 AM	18 ^°C	17 ^°C	94 ^%	1017.3 hPa	14.5 ^km	ESE (110°)	5.6 ^km/h			Clear
3:55 AM	18 ^°C	17 ^°C	94 ^%	1017.3 hPa	11.3 ^km	Calm				Clear
4:15 AM	18 ^°C	17 ^°C	94 ^%	1017.3 hPa	16.1 ^km	SE (130°)	5.6 ^km/h			Clear
4:35 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	14.5 ^km	Calm				Clear
4:55 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	8 ^km	Calm				Clear
5:15 AM	17 ^°C	16 ^°C	94 ^%	1017.6 hPa	4.8 ^km	Calm				Clear
5:35 AM	17 ^°C	16 ^°C	94 ^%	1017.9 hPa	11.3 ^km	Calm				Clear
5:55 AM	18 ^°C	17 ^°C	94 ^%	1017.6 hPa	14.5 ^km	Calm				Clear
6:15 AM	18 ^°C	17 ^°C	94 ^%	1017.9 hPa	16.1 ^km	Calm				Scattered Clouds
6:35 AM	18 ^°C	17 ^°C	94 ^%	1018.6 hPa	14.5 ^km	Calm				Mostly Cloudy
6:55 AM	18 ^°C	17 ^°C	94 ^%	1018.6 hPa	8 ^km	Calm				Mostly Cloudy
7:15 AM	18 ^°C	17 ^°C	94 ^%	1018.6 hPa	12.9 ^km	Calm				Mostly Cloudy
7:35 AM	18 ^°C	17 ^°C	94 ^%	1019.3 hPa	8 ^km	NW (320°)	5.6 ^km/h			Scattered Clouds
7:55 AM	19 ^°C	18 ^°C	94 ^%	1019.3 hPa	12.9 ^km	Calm				Mostly Cloudy
8:15 AM	19 ^°C	18 ^°C	94 ^%	1019.3 hPa	14.5 ^km	Calm				Mostly Cloudy
8:35 AM	20 ^°C	19 ^°C	94 ^%	1019.3 hPa	16.1 ^km	Calm				Mostly Cloudy
8:55 AM	20 ^°C	19 ^°C	94 ^%	1019.3 hPa	16.1 ^km	Calm				Scattered Clouds
9:15 AM	21 ^°C	19 ^°C	88 ^%	1019.3 hPa	16.1 ^km	WSW (250°)	5.6 ^km/h			Clear
9:35 AM	23 ^°C	20 ^°C	83 ^%	1019 hPa	11.3 ^km	SW (230°)	5.6 ^km/h			Partly Cloudy
9:55 AM	23 ^°C	20 ^°C	83 ^%	1019.3 hPa	16.1 ^km	West (270°)	5.6 ^km/h			Clear
10:15 AM	24 ^°C	21 ^°C	83 ^%	1019 hPa	16.1 ^km	WNW (300°)	5.6 ^km/h			Clear
10:35 AM	26 ^°C	21 ^°C	74 ^%	1019 hPa	16.1 ^km	West (270°)	7.4 ^km/h			Clear
10:55 AM	26 ^°C	21 ^°C	74 ^%	1019.3 hPa	16.1 ^km	Calm				Clear
11:15 AM	26 ^°C	21 ^°C	74 ^%	1019 hPa	16.1 ^km	West (260°)	9.3 ^km/h			Clear
11:35 AM	27 ^°C	21 ^°C	70 ^%	1019 hPa	16.1 ^km	WNW (300°)	11.1 ^km/h			Clear
11:55 AM	27 ^°C	21 ^°C	70 ^%	1018.6 hPa	16.1 ^km	West (270°)	9.3 ^km/h			Clear
12:15 PM	27 ^°C	21 ^°C	70 ^%	1018.6 hPa	16.1 ^km	West (270°)	7.4 ^km/h			Clear
12:35 PM	28 ^°C	22 ^°C	70 ^%	1018.6 hPa	16.1 ^km	WNW (290°)	7.4 ^km/h			Clear
12:55 PM	28 ^°C	21 ^°C	66 ^%	1018.3 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h			Scattered Clouds
1:15 PM	29 ^°C	22 ^°C	66 ^%	1018.3 hPa	16.1 ^km	Calm				Scattered Clouds
1:35 PM	29 ^°C	22 ^°C	66 ^%	1018.3 hPa	16.1 ^km	WNW (290°)	9.3 ^km/h			Mostly Cloudy
1:55 PM	29 ^°C	22 ^°C	66 ^%	1018.3 hPa	16.1 ^km	WNW (290°)	9.3 ^km/h			Mostly Cloudy
2:15 PM	29 ^°C	21 ^°C	62 ^%	1017.9 hPa	16.1 ^km	West (280°)	11.1 ^km/h			Mostly Cloudy
2:35 PM	29 ^°C	21 ^°C	62 ^%	1017.6 hPa	16.1 ^km	WSW (240°)	9.3 ^km/h			Scattered Clouds
2:55 PM	29 ^°C	21 ^°C	62 ^%	1017.3 hPa	16.1 ^km	Calm				Mostly Cloudy
3:15 PM	29 ^°C	20 ^°C	58 ^%	1016.9 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h			Mostly Cloudy
3:35 PM	29 ^°C	21 ^°C	62 ^%	1017.3 hPa	16.1 ^km	West (270°)	5.6 ^km/h			Scattered Clouds
3:55 PM	28 ^°C	20 ^°C	62 ^%	1016.9 hPa	16.1 ^km	West (260°)	5.6 ^km/h			Partly Cloudy
4:15 PM	29 ^°C	20 ^°C	58 ^%	1016.9 hPa	16.1 ^km	SW (220°)	5.6 ^km/h			Mostly Cloudy
4:35 PM	28 ^°C	20 ^°C	62 ^%	1017.3 hPa	16.1 ^km	WSW (240°)	11.1 ^km/h			Mostly Cloudy
4:55 PM	28 ^°C	21 ^°C	66 ^%	1017.6 hPa	16.1 ^km	SW (220°)	11.1 ^km/h			Mostly Cloudy
5:15 PM	27 ^°C	21 ^°C	70 ^%	1017.3 hPa	16.1 ^km	SW (220°)	7.4 ^km/h			Scattered Clouds
5:35 PM	26 ^°C	21 ^°C	74 ^%	1017.6 hPa	16.1 ^km	SW (230°)	7.4 ^km/h			Mostly Cloudy
5:55 PM	26 ^°C	21 ^°C	74 ^%	1017.6 hPa	11.3 ^km	WSW (250°)	5.6 ^km/h			Mostly Cloudy
6:15 PM	24 ^°C	22 ^°C	89 ^%	1017.6 hPa	8 ^km	West (260°)	7.4 ^km/h	0.76 mm	Thunderstorm	Mostly Cloudy
6:35 PM	23 ^°C	21 ^°C	88 ^%	1017.6 hPa	4.8 ^km	Calm		1.78 mm		Overcast
6:55 PM	23 ^°C	21 ^°C	88 ^%	1017.9 hPa	11.3 ^km	NW (320°)	5.6 ^km/h	2.03 mm	Thunderstorm	Thunderstorm
7:15 PM	22 ^°C	20 ^°C	88 ^%	1017.3 hPa	16.1 ^km	Calm				Overcast
7:35 PM	22 ^°C	20 ^°C	88 ^%	1016.9 hPa	8 ^km	ESE (110°)	5.6 ^km/h			Mostly Cloudy
7:55 PM	22 ^°C	20 ^°C	88 ^%	1016.9 hPa	11.3 ^km	Calm				Partly Cloudy
8:15 PM	22 ^°C	20 ^°C	88 ^%	1016.9 hPa	8 ^km	Calm				Partly Cloudy
8:35 PM	22 ^°C	21 ^°C	94 ^%	1017.3 hPa	8 ^km	Calm				Scattered Clouds
8:55 PM	23 ^°C	21 ^°C	88 ^%	1016.9 hPa	16.1 ^km	WNW (290°)	5.6 ^km/h			Partly Cloudy
9:15 PM	22 ^°C	21 ^°C	94 ^%	1017.3 hPa	14.5 ^km	Calm				Scattered Clouds
9:35 PM	22 ^°C	21 ^°C	94 ^%	1017.3 hPa	8 ^km	Calm				Partly Cloudy
9:55 PM	22 ^°C	21 ^°C	94 ^%	1017.6 hPa	6.4 ^km	Calm				Scattered Clouds
10:15 PM	22 ^°C	21 ^°C	94 ^%	1017.6 hPa	6.4 ^km	Calm				Overcast
10:35 PM	22 ^°C	21 ^°C	94 ^%	1017.6 hPa	4 ^km	Calm				Mostly Cloudy
10:55 PM	22 ^°C	21 ^°C	94 ^%	1017.6 hPa	4 ^km	Calm				Mostly Cloudy
11:15 PM	22 ^°C	21 ^°C	94 ^%	1017.3 hPa	4 ^km	Calm				Partly Cloudy
11:35 PM	22 ^°C	21 ^°C	94 ^%	1017.3 hPa	4 ^km	Calm				Clear
11:55 PM	22 ^°C	20 ^°C	88 ^%	1017.3 hPa	8 ^km	WNW (290°)	7.4 ^km/h			Clear

Hourly data recorded from KGAI, located 0 kilometers away from Rockville, Maryland