History for Philadelphia, PA

Monday, December 31, 2012 — View Current Conditions

Monday, December 31, 2012

	Actual	Average	Record
Temperature
Mean Temperature	36 °F	34 °F
Max Temperature	41 °F	41 °F	66 °F (1884)
Min Temperature	30 °F	27 °F	0 °F (1880)
Degree Days
Heating Degree Days	29	31
Month to date heating degree days	670	854
Since 1 July heating degree days	1496	1670
Cooling Degree Days	0	0
Month to date cooling degree days	0	0
Year to date cooling degree days	1603	1301
Moisture
Dew Point	21 °F
Average Humidity	59
Maximum Humidity	69
Minimum Humidity	48
Precipitation
Precipitation	0.00 in	0.09 in	1.09 in (1911)
Month to date precipitation	4.42	3.56
Year to date precipitation	35.94	41.53
Snow
Snow	0.00 in	0.20 in	3.80 in (1967)
Month to date snowfall	0.2	3.4
Since 1 July snowfall	0.2	3.7
Snow Depth	0.00 in
Sea Level Pressure
Sea Level Pressure	30.15 in
Wind
Wind Speed	13 mph (WSW)
Max Wind Speed	20 mph
Max Gust Speed	24 mph
Visibility	10 miles
Events

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

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	The final curtain - Happy New Year! The last sunset of 2012.
	Something for everyone

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Astronomy

May. 20, 2013	Rise	Set
Actual Time	7:22 AM EST	4:46 PM EST
Civil Twilight	6:52 AM EST	5:16 PM EST
Nautical Twilight	6:18 AM EST	5:50 PM EST
Astronomical Twilight	5:45 AM EST	6:23 PM EST
Moon	8:14 PM EST (12/31)	9:02 AM EST (12/31)
Length Of Visible Light	10h 24m
Length of Day	9h 23m

Waning Gibbous, 90% of the Moon is Illuminated
Dec 31 Waning Gibbous	Jan 4 Last Quarter	Jan 11 New	Jan 18 First Quarter	Jan 26 Full

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Hourly Observations

Time (EST)	Temp.	Windchill	Dew Point	Humidity	Pressure	Visibility	Wind Dir	Wind Speed	Gust Speed	Precip	Conditions
12:54 AM	33.1 °F	26.1 °F	21.0 °F	61%	30.26 in	10.0 mi	West	8.1 mph	-	N/A	Mostly Cloudy
1:54 AM	34.0 °F	24.6 °F	21.0 °F	59%	30.27 in	10.0 mi	West	13.8 mph	-	N/A	Overcast
2:54 AM	32.0 °F	23.0 °F	19.0 °F	59%	30.29 in	10.0 mi	WSW	11.5 mph	-	N/A	Scattered Clouds
3:54 AM	30.0 °F	19.5 °F	19.0 °F	64%	30.27 in	10.0 mi	West	13.8 mph	-	N/A	Scattered Clouds
4:54 AM	30.0 °F	21.7 °F	19.0 °F	64%	30.26 in	10.0 mi	West	9.2 mph	-	N/A	Mostly Cloudy
5:54 AM	30.0 °F	20.0 °F	19.0 °F	64%	30.25 in	10.0 mi	West	12.7 mph	-	N/A	Overcast
6:54 AM	30.0 °F	20.0 °F	19.0 °F	64%	30.24 in	10.0 mi	West	12.7 mph	-	N/A	Overcast
7:54 AM	30.9 °F	22.2 °F	19.0 °F	61%	30.24 in	10.0 mi	West	10.4 mph	-	N/A	Overcast
8:54 AM	30.9 °F	20.7 °F	19.0 °F	61%	30.25 in	10.0 mi	West	13.8 mph	-	N/A	Overcast
9:54 AM	32.0 °F	21.6 °F	19.9 °F	61%	30.25 in	10.0 mi	WSW	15.0 mph	-	N/A	Overcast
10:54 AM	34.0 °F	23.8 °F	19.9 °F	56%	30.23 in	10.0 mi	WSW	16.1 mph	-	N/A	Overcast
11:54 AM	36.0 °F	27.5 °F	21.9 °F	57%	30.19 in	10.0 mi	WSW	12.7 mph	-	N/A	Overcast
12:54 PM	36.0 °F	28.5 °F	21.0 °F	55%	30.15 in	10.0 mi	SW	10.4 mph	-	N/A	Overcast
1:54 PM	37.0 °F	29.3 °F	21.0 °F	52%	30.12 in	10.0 mi	SW	11.5 mph	-	N/A	Overcast
2:54 PM	37.0 °F	29.3 °F	19.9 °F	50%	30.10 in	10.0 mi	SW	11.5 mph	-	N/A	Mostly Cloudy
3:54 PM	37.9 °F	30.5 °F	21.9 °F	53%	30.07 in	10.0 mi	SW	11.5 mph	-	N/A	Overcast
4:54 PM	37.9 °F	30.9 °F	23.0 °F	55%	30.06 in	10.0 mi	SW	10.4 mph	-	N/A	Overcast
5:54 PM	37.9 °F	31.5 °F	24.1 °F	57%	30.04 in	10.0 mi	WSW	9.2 mph	-	N/A	Overcast
6:54 PM	39.0 °F	31.8 °F	25.0 °F	57%	30.03 in	10.0 mi	WSW	11.5 mph	-	N/A	Overcast
7:54 PM	39.0 °F	30.6 °F	24.1 °F	55%	30.00 in	10.0 mi	SW	15.0 mph	-	N/A	Overcast
8:54 PM	39.9 °F	31.1 °F	25.0 °F	55%	29.98 in	10.0 mi	SW	17.3 mph	-	N/A	Overcast
9:54 PM	39.9 °F	32.1 °F	25.0 °F	55%	29.99 in	10.0 mi	WSW	13.8 mph	-	N/A	Overcast
10:54 PM	39.9 °F	31.4 °F	24.1 °F	53%	29.98 in	10.0 mi	WSW	16.1 mph	-	N/A	Overcast
11:54 PM	41.0 °F	34.3 °F	25.0 °F	53%	29.97 in	10.0 mi	WSW	11.5 mph	-	N/A	Overcast
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