History for San Francisco, CA

Sunday, January 13, 2013 — View Current Conditions

Sunday, January 13, 2013

	Actual	Average	Record
Temperature
Mean Temperature	43 °F	50 °F
Max Temperature	50 °F	56 °F	72 °F (2009)
Min Temperature	36 °F	44 °F	29 °F (1963)
Degree Days
Heating Degree Days	22	15
Month to date heating degree days	230	195
Since 1 July heating degree days	1225	1205
Cooling Degree Days	0	0
Month to date cooling degree days	0	0
Year to date cooling degree days	0	0
Moisture
Dew Point	26 °F
Average Humidity	47
Maximum Humidity	65
Minimum Humidity	28
Precipitation
Precipitation	0.00 in	0.14 in	1.97 in (1993)
Month to date precipitation	0.10	1.82
Year to date precipitation	0.10	1.82
Since 1 July precipitation	11.10	9.39
Sea Level Pressure
Sea Level Pressure	30.22 in
Wind
Wind Speed	8 mph (NNE)
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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Local Photos

	Borax Lake
	Borax Lake... Just after sunrise.
	Borax Lake
	Valley Oak This is another HDR image I didn't care for. Too much ghosting or haloing. Aggressive brightness and contrast tweaks.
	Curves
	Goldeneye
	Blue Heron
	Scrub Jay
	White Beard
	Buzzard

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Astronomy

May. 20, 2013	Rise	Set
Actual Time	7:23 AM PST	5:13 PM PST
Civil Twilight	6:55 AM PST	5:41 PM PST
Nautical Twilight	6:22 AM PST	6:14 PM PST
Astronomical Twilight	5:51 AM PST	6:45 PM PST
Moon	8:29 AM PST (1/13)	7:54 PM PST (1/13)
Length Of Visible Light	10h 46m
Length of Day	9h 49m

Waxing Crescent, 6% of the Moon is Illuminated
Jan 13 Waxing Crescent	Jan 18 First Quarter	Jan 26 Full	Feb 3 Last Quarter	Feb 9 New

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Hourly Observations

Time (PST)	Temp.	Windchill	Dew Point	Humidity	Pressure	Visibility	Wind Dir	Wind Speed	Gust Speed	Precip	Conditions
12:56 AM	44.1 °F	38.6 °F	28.9 °F	55%	30.21 in	10.0 mi	ENE	10.4 mph	-	N/A	Clear
1:56 AM	41.0 °F	36.4 °F	30.9 °F	67%	30.22 in	10.0 mi	SE	6.9 mph	-	N/A	Clear
2:56 AM	43.0 °F	37.7 °F	26.1 °F	51%	30.23 in	10.0 mi	ENE	9.2 mph	-	N/A	Clear
3:56 AM	44.1 °F	37.4 °F	24.1 °F	45%	30.23 in	10.0 mi	NE	13.8 mph	-	N/A	Clear
4:56 AM	43.0 °F	37.2 °F	23.0 °F	45%	30.22 in	10.0 mi	NE	10.4 mph	-	N/A	Clear
5:56 AM	43.0 °F	37.7 °F	28.0 °F	56%	30.23 in	10.0 mi	ENE	9.2 mph	-	N/A	Clear
6:56 AM	39.0 °F	32.8 °F	27.0 °F	62%	30.25 in	10.0 mi	East	9.2 mph	-	N/A	Partly Cloudy
7:56 AM	41.0 °F	35.8 °F	28.9 °F	62%	30.26 in	10.0 mi	SE	8.1 mph	-	N/A	Partly Cloudy
8:56 AM	42.8 °F	36.2 °F	21.2 °F	42%	30.28 in	10.0 mi	NE	12.7 mph	-	N/A	Scattered Clouds
9:56 AM	43.0 °F	-	21.9 °F	43%	30.28 in	10.0 mi	Calm	Calm	-	N/A	Scattered Clouds
10:56 AM	45.0 °F	43.5 °F	24.1 °F	44%	30.26 in	10.0 mi	NE	3.5 mph	-	N/A	Mostly Cloudy
11:56 AM	46.0 °F	-	23.0 °F	40%	30.25 in	10.0 mi	Calm	Calm	-	N/A	Mostly Cloudy
12:56 PM	46.0 °F	-	16.0 °F	30%	30.22 in	10.0 mi	Calm	Calm	-	N/A	Scattered Clouds
1:56 PM	48.9 °F	-	18.0 °F	29%	30.20 in	10.0 mi	Calm	Calm	-	N/A	Scattered Clouds
2:56 PM	48.9 °F	-	19.9 °F	32%	30.20 in	10.0 mi	NE	4.6 mph	-	N/A	Partly Cloudy
3:56 PM	48.9 °F	-	27.0 °F	43%	30.19 in	10.0 mi	Calm	Calm	-	N/A	Partly Cloudy
4:56 PM	50.0 °F	-	28.0 °F	43%	30.19 in	10.0 mi	North	10.4 mph	-	N/A	Partly Cloudy
5:56 PM	46.0 °F	41.4 °F	30.9 °F	56%	30.19 in	10.0 mi	WNW	9.2 mph	-	N/A	Clear
6:56 PM	46.0 °F	42.5 °F	33.1 °F	61%	30.20 in	10.0 mi	WNW	6.9 mph	-	N/A	Clear
7:56 PM	44.1 °F	40.8 °F	33.1 °F	65%	30.20 in	10.0 mi	NNW	5.8 mph	-	N/A	Clear
8:56 PM	46.0 °F	41.9 °F	34.0 °F	63%	30.21 in	10.0 mi	North	8.1 mph	-	N/A	Clear
9:56 PM	46.9 °F	-	25.0 °F	42%	30.21 in	10.0 mi	North	15.0 mph	-	N/A	Clear
10:56 PM	46.9 °F	-	26.1 °F	44%	30.21 in	10.0 mi	North	13.8 mph	-	N/A	Clear
11:56 PM	46.9 °F	-	23.0 °F	39%	30.23 in	10.0 mi	North	16.1 mph	-	N/A	Clear
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