History for Washington, DC

Tuesday, December 11, 2012 — View Current Conditions

	Daily Summary

Daily

	Actual:	Average :	Record :
Temperature:
Mean Temperature	52 °F	41 °F
Max Temperature	62 °F	48 °F	68 °F (1971)
Min Temperature	41 °F	34 °F	12 °F (1917)
Degree Days:
Heating Degree Days	13	24
Month to date heating degree days	159	249
Since 1 July heating degree days	870	944
Cooling Degree Days	0	0
Month to date cooling degree days	0	0
Year to date cooling degree days	1975	1549
Growing Degree Days	2 (Base 50)
Moisture:
Dew Point	34 °F
Average Humidity	66
Maximum Humidity	87
Minimum Humidity	44
Precipitation:
Precipitation	0.07 in	0.11 in	1.66 in (2008)
Month to date precipitation	0.29	1.19
Year to date precipitation	29.71	37.88
Snow:
Snow	0.00 in	0.10 in	6.80 in (1960)
Month to date snowfall	0.0	0.7
Since 1 July snowfall	T	1.2
Snow Depth	0.00 in
Sea Level Pressure:
Sea Level Pressure	29.98 in
Wind:
Wind Speed	12 mph (NNW)
Max Wind Speed	26 mph
Max Gust Speed	36 mph
Visibility	10 miles
Events	Rain

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

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Radar Archive:

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Local Photos:

Venus and the Moon

celestial capture

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Astronomy for December 11, 2012:

	Rise:	Set:
Actual Time:	7:16 AM EST	4:46 PM EST
Civil Twilight:	6:47 AM EST	5:16 PM EST
Nautical Twilight:	6:13 AM EST	5:49 PM EST
Astronomical Twilight:	5:41 AM EST	6:22 PM EST
Moon:	5:09 AM EST (12/11)	3:23 PM EST (12/11)
Length Of Visible Light:	10h 29m
Length of Day:	9h 29m

Waning Crescent, 4% Moon Illumination

Dec 11	Dec 13 New	Dec 20 First Quarter	Dec 28 Full	Jan 4 Last Quarter

For more information about the solar system, view the complete star chart!

Definitions of Astronomy Terms

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	Hourly Observations

Time (EST):	Temp.:	Dew Point:	Humidity:	Sea Level Pressure:	Visibility:	Wind Dir:	Wind Speed:	Gust Speed:	Precip:	Events:	Conditions:
12:09 AM	62.6 °F	55.4 °F	77%	29.65 in	10.0 miles	WNW	16.1 mph	20.7 mph	N/A	Rain	Light Rain
12:27 AM	57.2 °F	50.0 °F	77%	29.68 in	10.0 miles	NW	19.6 mph	34.5 mph	0.00 in	Rain	Light Rain
12:52 AM	53.1 °F	44.1 °F	71%	29.70 in	10.0 miles	NNW	18.4 mph	28.8 mph	0.00 in		Mostly Cloudy
1:52 AM	52.0 °F	41.0 °F	66%	29.72 in	10.0 miles	North	13.8 mph	-	N/A		Overcast
2:52 AM	48.0 °F	41.0 °F	77%	29.78 in	6.0 miles	NW	11.5 mph	18.4 mph	0.07 in	Rain	Light Rain
3:52 AM	46.9 °F	39.0 °F	74%	29.81 in	10.0 miles	NNW	11.5 mph	-	0.00 in		Overcast
4:52 AM	46.0 °F	37.9 °F	73%	29.84 in	10.0 miles	NNW	13.8 mph	23.0 mph	0.00 in	Rain	Light Rain
5:52 AM	46.0 °F	37.0 °F	71%	29.88 in	10.0 miles	NNW	12.7 mph	-	0.00 in		Overcast
6:52 AM	46.0 °F	35.1 °F	66%	29.91 in	10.0 miles	North	17.3 mph	-	N/A		Mostly Cloudy
7:52 AM	46.0 °F	34.0 °F	63%	29.94 in	10.0 miles	North	12.7 mph	-	N/A		Overcast
8:52 AM	46.9 °F	34.0 °F	61%	29.96 in	10.0 miles	North	16.1 mph	-	N/A		Mostly Cloudy
9:52 AM	48.0 °F	34.0 °F	58%	29.99 in	10.0 miles	North	13.8 mph	21.9 mph	N/A		Mostly Cloudy
10:52 AM	48.0 °F	32.0 °F	54%	30.01 in	10.0 miles	NW	15.0 mph	19.6 mph	N/A		Overcast
11:52 AM	48.9 °F	32.0 °F	52%	30.01 in	10.0 miles	NNW	18.4 mph	-	N/A		Overcast
12:52 PM	50.0 °F	32.0 °F	50%	30.01 in	10.0 miles	NNW	9.2 mph	-	N/A		Overcast
1:52 PM	50.0 °F	30.2 °F	47%	30.02 in	10.0 miles	NW	10.4 mph	17.3 mph	N/A		Overcast
2:52 PM	51.1 °F	30.0 °F	44%	30.04 in	10.0 miles	North	10.4 mph	-	N/A		Mostly Cloudy
3:52 PM	48.9 °F	32.0 °F	52%	30.06 in	10.0 miles	North	13.8 mph	-	N/A		Mostly Cloudy
4:52 PM	48.0 °F	28.0 °F	46%	30.11 in	10.0 miles	North	11.5 mph	-	N/A		Mostly Cloudy
5:52 PM	46.9 °F	28.0 °F	48%	30.14 in	10.0 miles	NNW	11.5 mph	-	N/A		Scattered Clouds
6:52 PM	46.0 °F	28.9 °F	51%	30.17 in	10.0 miles	NW	9.2 mph	-	N/A		Partly Cloudy
7:52 PM	44.1 °F	28.9 °F	55%	30.18 in	10.0 miles	North	9.2 mph	-	N/A		Mostly Cloudy
8:52 PM	44.1 °F	28.0 °F	53%	30.21 in	10.0 miles	NNW	8.1 mph	-	N/A		Mostly Cloudy
9:52 PM	43.0 °F	28.0 °F	56%	30.22 in	10.0 miles	NNW	9.2 mph	-	N/A		Scattered Clouds
10:52 PM	43.0 °F	27.0 °F	53%	30.23 in	10.0 miles	NNW	9.2 mph	-	N/A		Mostly Cloudy
11:52 PM	42.1 °F	27.0 °F	55%	30.24 in	10.0 miles	NNW	6.9 mph	-	N/A		Mostly Cloudy

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