History for Philadelphia, PA

Wednesday, January 4, 2012 — View Current Conditions

	Daily Summary

Daily

	Actual:	Average :	Record :
Temperature:
Mean Temperature	22 °F	33 °F
Max Temperature	30 °F	41 °F	68 °F (1950)
Min Temperature	14 °F	26 °F	2 °F (1918)
Degree Days:
Heating Degree Days	43	32
Month to date heating degree days	126	126
Since 1 July heating degree days	1446	1796
Cooling Degree Days	0	0
Month to date cooling degree days	0	0
Year to date cooling degree days	0	0
Moisture:
Dew Point	9 °F
Average Humidity	45
Maximum Humidity	53
Minimum Humidity	36
Precipitation:
Precipitation	0.01 in	0.10 in	1.51 in (1982)
Month to date precipitation	0.03	0.38
Year to date precipitation	0.03	0.38
Snow:
Snow	0.20 in	0.10 in	4.50 in (1942)
Month to date snowfall	0.2	0.6
Since 1 July snowfall	0.5	4.3
Snow Depth	0.00 in
Sea Level Pressure:
Sea Level Pressure	30.13 in
Wind:
Wind Speed	10 mph (WSW)
Max Wind Speed	16 mph
Max Gust Speed	23 mph
Visibility	8 miles
Events	Snow

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

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Local Photos:

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Astronomy for January 4, 2012:

	Rise:	Set:
Actual Time:	7:22 AM EST	4:49 PM EST
Civil Twilight:	6:52 AM EST	5:19 PM EST
Nautical Twilight:	6:18 AM EST	5:53 PM EST
Astronomical Twilight:	5:45 AM EST	6:25 PM EST
Moon:	1:10 PM EST (1/4)	3:08 AM EST (1/4)
Length Of Visible Light:	10h 26m
Length of Day:	9h 26m

Waxing Gibbous, 80% Moon Illumination

Jan 4	Jan 9 Full	Jan 16 Last Quarter	Jan 23 New	Jan 30 First 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:
12:54 AM	18.0 °F	-0.9 °F	44%	30.22 in	10.0 miles	NNW	9.2 mph	-	N/A		Clear
1:54 AM	17.1 °F	-0.9 °F	45%	30.24 in	10.0 miles	NW	13.8 mph	23.0 mph	N/A		Clear
2:54 AM	16.0 °F	-2.0 °F	45%	30.25 in	10.0 miles	NW	12.7 mph	-	N/A		Clear
3:54 AM	15.1 °F	-2.0 °F	47%	30.26 in	10.0 miles	NW	10.4 mph	-	N/A		Clear
4:54 AM	14.0 °F	-2.9 °F	47%	30.26 in	10.0 miles	NW	9.2 mph	-	N/A		Clear
5:54 AM	14.0 °F	-4.0 °F	45%	30.28 in	10.0 miles	WNW	11.5 mph	-	N/A		Partly Cloudy
6:54 AM	14.0 °F	-2.9 °F	47%	30.29 in	10.0 miles	WNW	10.4 mph	-	N/A		Clear
7:54 AM	15.1 °F	-2.9 °F	45%	30.31 in	10.0 miles	WNW	9.2 mph	-	N/A		Scattered Clouds
8:54 AM	16.0 °F	-5.1 °F	39%	30.31 in	10.0 miles	WNW	6.9 mph	-	N/A		Mostly Cloudy
9:54 AM	18.0 °F	-4.0 °F	38%	30.29 in	10.0 miles	West	5.8 mph	-	N/A		Scattered Clouds
10:54 AM	21.0 °F	-2.0 °F	36%	30.27 in	10.0 miles	West	9.2 mph	-	N/A		Scattered Clouds
11:54 AM	23.0 °F	1.9 °F	40%	30.20 in	10.0 miles	SW	3.5 mph	-	N/A		Mostly Cloudy
12:54 PM	25.0 °F	3.9 °F	41%	30.17 in	10.0 miles	West	8.1 mph	-	N/A		Mostly Cloudy
1:54 PM	26.1 °F	7.0 °F	44%	30.13 in	10.0 miles	SW	10.4 mph	-	N/A		Mostly Cloudy
2:54 PM	26.1 °F	7.0 °F	44%	30.12 in	10.0 miles	SW	12.7 mph	-	N/A		Overcast
3:54 PM	26.1 °F	7.0 °F	44%	30.12 in	10.0 miles	SW	12.7 mph	-	N/A		Overcast
4:54 PM	26.1 °F	9.0 °F	49%	30.10 in	10.0 miles	SW	11.5 mph	-	N/A		Overcast
5:54 PM	27.0 °F	10.0 °F	49%	30.09 in	10.0 miles	SW	10.4 mph	-	N/A		Mostly Cloudy
6:54 PM	27.0 °F	10.9 °F	51%	30.09 in	10.0 miles	SSW	8.1 mph	-	N/A		Overcast
7:54 PM	27.0 °F	10.9 °F	51%	30.07 in	10.0 miles	South	8.1 mph	-	N/A		Overcast
8:54 PM	28.0 °F	12.0 °F	51%	30.05 in	10.0 miles	South	9.2 mph	-	N/A		Overcast
9:54 PM	28.9 °F	14.0 °F	54%	30.03 in	10.0 miles	South	9.2 mph	-	N/A		Overcast
10:36 PM	30.2 °F	17.6 °F	60%	30.02 in	6.0 miles	SSW	10.4 mph	-	0.00 in	Snow	Light Snow
10:49 PM	28.4 °F	19.4 °F	69%	30.02 in	3.0 miles	SW	11.5 mph	-	0.00 in	Snow	Light Snow
10:54 PM	28.9 °F	19.9 °F	69%	30.02 in	3.0 miles	SW	12.7 mph	-	0.00 in	Snow	Light Snow
10:59 PM	28.4 °F	21.2 °F	74%	30.02 in	1.8 miles	SW	10.4 mph	-	0.00 in	Snow	Light Snow
11:10 PM	28.4 °F	23.0 °F	80%	30.02 in	1.5 miles	SW	11.5 mph	-	0.00 in	Snow	Light Snow
11:21 PM	28.4 °F	24.8 °F	86%	30.01 in	1.8 miles	SSW	13.8 mph	-	0.01 in	Snow	Light Snow
11:27 PM	28.4 °F	24.8 °F	86%	30.01 in	2.5 miles	SSW	13.8 mph	-	0.01 in	Snow	Light Snow
11:34 PM	28.4 °F	24.8 °F	86%	30.01 in	4.0 miles	SSW	10.4 mph	19.6 mph	0.01 in	Snow	Light Snow
11:38 PM	28.4 °F	24.8 °F	86%	30.00 in	7.0 miles	SSW	10.4 mph	-	0.01 in	Snow	Light Snow
11:54 PM	28.0 °F	24.1 °F	85%	30.00 in	9.0 miles	SW	10.4 mph	-	0.01 in		Overcast

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