POTOMAC, MARYLAND

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Elevation: 8 meters Latitude: 39 02N Longitude: 077 15W

WEATHER

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

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WEATHER ALMANAC - 15 SEPTEMBER, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	15.7 ^°C	22 ^°C (2:55 pm)	9 ^°C (12:35 am)
Dewpoint	10.6 ^°C	14 ^°C (11:15 pm)	8 ^°C (12:35 am)
Humidity	74.1 ^%	100 ^% (4:55 am)	49 ^% (2:35 pm)
Barometer	1023.4 ^hPa	1025.7 hPa (7:15 am)	1018.6 hPa (11:55 pm)
Wind Speed	4.5 ^km/h	14.8 ^km/h (9:15 pm)

Weather Element	Average
Visibility	15.9 ^km
Wind Direction	E (85.7 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	2.8 (Base 18.3)
Growing Degree Days	5.5 (Base 10)

Averaged from 69 records on 15 September, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 15 SEPTEMBER, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:35 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Clear
12:55 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Clear
1:15 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Clear
1:35 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Clear
1:55 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Clear
2:15 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Scattered Clouds
2:35 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
2:55 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Overcast
3:15 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Overcast
3:55 AM	10 ^°C	9 ^°C	94 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
4:15 AM	10 ^°C	9 ^°C	94 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
4:35 AM	10 ^°C	9 ^°C	94 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
4:55 AM	9 ^°C	9 ^°C	100 ^%	1024.7 hPa	16.1 ^km	Calm		Scattered Clouds
5:15 AM	9 ^°C	8 ^°C	93 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
5:35 AM	9 ^°C	9 ^°C	100 ^%	1025.1 hPa	16.1 ^km	Calm		Overcast
5:55 AM	9 ^°C	8 ^°C	93 ^%	1025.1 hPa	16.1 ^km	Calm		Overcast
6:15 AM	9 ^°C	8 ^°C	93 ^%	1025.1 hPa	16.1 ^km	Calm		Mostly Cloudy
6:35 AM	9 ^°C	8 ^°C	93 ^%	1025.4 hPa	16.1 ^km	Calm		Partly Cloudy
6:55 AM	9 ^°C	8 ^°C	93 ^%	1025.4 hPa	16.1 ^km	Calm		Clear
7:15 AM	9 ^°C	8 ^°C	93 ^%	1025.7 hPa	11.3 ^km	Calm		Clear
7:35 AM	9 ^°C	8 ^°C	93 ^%	1025.7 hPa	14.5 ^km	Calm		Clear
7:55 AM	9 ^°C	9 ^°C	100 ^%	1025.7 hPa	16.1 ^km	Calm		Clear
8:15 AM	11 ^°C	11 ^°C	100 ^%	1025.7 hPa	16.1 ^km	Calm		Clear
8:35 AM	13 ^°C	12 ^°C	94 ^%	1025.7 hPa	16.1 ^km	Calm		Clear
8:55 AM	15 ^°C	11 ^°C	77 ^%	1025.7 hPa	16.1 ^km	ESE (120°)	7.4 ^km/h	Clear
9:15 AM	16 ^°C	11 ^°C	72 ^%	1025.7 hPa	16.1 ^km	SE (140°)	9.3 ^km/h	Clear
9:35 AM	16 ^°C	11 ^°C	72 ^%	1025.7 hPa	16.1 ^km	SE (130°)	7.4 ^km/h	Clear
9:55 AM	17 ^°C	11 ^°C	68 ^%	1025.7 hPa	16.1 ^km	SSE (150°)	7.4 ^km/h	Clear
10:15 AM	18 ^°C	11 ^°C	64 ^%	1025.7 hPa	16.1 ^km	Calm		Clear
10:35 AM	18 ^°C	11 ^°C	64 ^%	1025.7 hPa	16.1 ^km	Calm		Clear
10:55 AM	19 ^°C	11 ^°C	60 ^%	1025.7 hPa	16.1 ^km	Calm		Clear
11:15 AM	19 ^°C	12 ^°C	64 ^%	1025.4 hPa	16.1 ^km	SE (130°)	9.3 ^km/h	Partly Cloudy
11:35 AM	19 ^°C	12 ^°C	64 ^%	1025.1 hPa	16.1 ^km	Calm		Scattered Clouds
11:55 AM	19 ^°C	11 ^°C	60 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
12:15 PM	19 ^°C	10 ^°C	56 ^%	1024.7 hPa	16.1 ^km	Calm		Mostly Cloudy
12:35 PM	20 ^°C	11 ^°C	56 ^%	1024.4 hPa	16.1 ^km	Calm		Partly Cloudy
12:55 PM	21 ^°C	11 ^°C	53 ^%	1024 hPa	16.1 ^km	Calm		Scattered Clouds
1:15 PM	20 ^°C	11 ^°C	56 ^%	1023.7 hPa	16.1 ^km	East (90°)	5.6 ^km/h	Mostly Cloudy
1:35 PM	19 ^°C	11 ^°C	60 ^%	1023.7 hPa	16.1 ^km	WNW (300°)	9.3 ^km/h	Mostly Cloudy
1:55 PM	20 ^°C	11 ^°C	56 ^%	1023.4 hPa	16.1 ^km	Calm		Mostly Cloudy
2:15 PM	21 ^°C	11 ^°C	53 ^%	1023 hPa	16.1 ^km	West (280°)	7.4 ^km/h	Partly Cloudy
2:35 PM	21 ^°C	10 ^°C	49 ^%	1022.7 hPa	16.1 ^km	SW (220°)	5.6 ^km/h	Partly Cloudy
2:55 PM	22 ^°C	11 ^°C	50 ^%	1022.4 hPa	16.1 ^km	SSW (210°)	9.3 ^km/h	Partly Cloudy
3:15 PM	22 ^°C	11 ^°C	50 ^%	1022.4 hPa	16.1 ^km	SW (220°)	9.3 ^km/h	Scattered Clouds
3:35 PM	22 ^°C	11 ^°C	50 ^%	1022.4 hPa	16.1 ^km	West (260°)	11.1 ^km/h	Partly Cloudy
3:55 PM	21 ^°C	11 ^°C	53 ^%	1022 hPa	16.1 ^km	West (270°)	7.4 ^km/h	Scattered Clouds
4:15 PM	22 ^°C	11 ^°C	50 ^%	1021.7 hPa	16.1 ^km	SSE (150°)	9.3 ^km/h	Partly Cloudy
4:35 PM	22 ^°C	11 ^°C	50 ^%	1021.7 hPa	16.1 ^km	South (180°)	5.6 ^km/h	Clear
4:55 PM	22 ^°C	11 ^°C	50 ^%	1021.7 hPa	16.1 ^km	South (180°)	7.4 ^km/h	Partly Cloudy
5:15 PM	22 ^°C	11 ^°C	50 ^%	1021.3 hPa	16.1 ^km	WSW (240°)	7.4 ^km/h	Partly Cloudy
5:35 PM	22 ^°C	11 ^°C	50 ^%	1021.3 hPa	16.1 ^km	South (180°)	7.4 ^km/h	Clear
5:55 PM	21 ^°C	11 ^°C	53 ^%	1021.3 hPa	16.1 ^km	South (180°)	5.6 ^km/h	Clear
6:15 PM	21 ^°C	11 ^°C	53 ^%	1021 hPa	16.1 ^km	South (170°)	9.3 ^km/h	Clear
6:35 PM	21 ^°C	11 ^°C	53 ^%	1021 hPa	16.1 ^km	Calm		Clear
6:55 PM	19 ^°C	11 ^°C	60 ^%	1020.7 hPa	16.1 ^km	SSE (150°)	7.4 ^km/h	Clear
7:15 PM	18 ^°C	12 ^°C	68 ^%	1020.7 hPa	16.1 ^km	SSE (150°)	5.6 ^km/h	Clear
7:35 PM	18 ^°C	12 ^°C	68 ^%	1020.7 hPa	16.1 ^km	SSE (150°)	7.4 ^km/h	Clear
7:55 PM	18 ^°C	12 ^°C	68 ^%	1020.7 hPa	16.1 ^km	East (100°)	5.6 ^km/h	Clear
8:15 PM	17 ^°C	13 ^°C	77 ^%	1020.7 hPa	16.1 ^km	ESE (120°)	7.4 ^km/h	Clear
8:55 PM	17 ^°C	13 ^°C	77 ^%	1020.7 hPa	16.1 ^km	SE (130°)	13 ^km/h	Clear
9:15 PM	16 ^°C	13 ^°C	82 ^%	1020.3 hPa	16.1 ^km	SE (140°)	14.8 ^km/h	Clear
9:35 PM	17 ^°C	13 ^°C	77 ^%	1020.3 hPa	16.1 ^km	SE (140°)	11.1 ^km/h	Clear
9:55 PM	17 ^°C	13 ^°C	77 ^%	1020.3 hPa	16.1 ^km	SE (140°)	9.3 ^km/h	Clear
10:15 PM	17 ^°C	13 ^°C	77 ^%	1020 hPa	16.1 ^km	SE (140°)	9.3 ^km/h	Clear
10:35 PM	17 ^°C	13 ^°C	77 ^%	1020 hPa	16.1 ^km	SSE (150°)	11.1 ^km/h	Clear
10:55 PM	17 ^°C	13 ^°C	77 ^%	1019.6 hPa	16.1 ^km	SE (140°)	9.3 ^km/h	Clear
11:15 PM	17 ^°C	14 ^°C	82 ^%	1019.3 hPa	16.1 ^km	SSE (160°)	13 ^km/h	Clear
11:35 PM	17 ^°C	14 ^°C	82 ^%	1019 hPa	16.1 ^km	SSE (150°)	13 ^km/h	Clear
11:55 PM	17 ^°C	14 ^°C	82 ^%	1018.6 hPa	16.1 ^km	SSE (150°)	11.1 ^km/h	Clear

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