History for San Francisco, CA

Monday, December 10, 2012 — View Current Conditions

Monday, December 10, 2012

	Actual	Average	Record
Temperature
Mean Temperature	59 °F	51 °F
Max Temperature	66 °F	57 °F	70 °F (1958)
Min Temperature	52 °F	45 °F	29 °F (1972)
Degree Days
Heating Degree Days	6	14
Month to date heating degree days	84	134
Since 1 July heating degree days	679	698
Cooling Degree Days	0	0
Month to date cooling degree days	0	0
Year to date cooling degree days	86	164
Growing Degree Days	10 (Base 50)
Moisture
Dew Point	45 °F
Average Humidity	61
Maximum Humidity	77
Minimum Humidity	45
Precipitation
Precipitation	0.00 in	0.11 in	1.48 in (1996)
Month to date precipitation	2.24	1.13
Year to date precipitation	17.46	17.75
Since 1 July precipitation	7.00	4.67
Sea Level Pressure
Sea Level Pressure	30.17 in
Wind
Wind Speed	6 mph (ENE)
Max Wind Speed	17 mph
Max Gust Speed	21 mph
Visibility	10 miles
Events

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

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Local Photos

	House Sparrow
	But.... I like KISSYFACE! Pigeons, in love <3
	But.... I like KISSYFACE! Pigeons, in love <3
	Lazin'OnASunnyAfternoon In the summer time. Well it "almost" feels like summer.
	Hummingbird I do believe.
	Hummingbird Female Anna's.
	Juvenile White Crowned Sparrow
	Mr Grey In the afternoon sun.
	Golden-Crowned Sparrow 1st year I believe.

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Astronomy

May. 22, 2013	Rise	Set
Actual Time	7:14 AM PST	4:51 PM PST
Civil Twilight	6:44 AM PST	5:20 PM PST
Nautical Twilight	6:12 AM PST	5:53 PM PST
Astronomical Twilight	5:40 AM PST	6:24 PM PST
Moon	4:05 AM PST (12/10)	2:43 PM PST (12/10)
Length Of Visible Light	10h 35m
Length of Day	9h 37m

Waning Crescent, 9% of the Moon is Illuminated
Dec 10 Waning Crescent	Dec 13 New	Dec 19 First Quarter	Dec 28 Full	Jan 4 Last Quarter

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Hourly Observations

Time (PST)	Temp.	Dew Point	Humidity	Pressure	Visibility	Wind Dir	Wind Speed	Gust Speed	Precip	Conditions
12:56 AM	60.1 °F	45.0 °F	57%	30.18 in	10.0 mi	ENE	15.0 mph	-	N/A	Clear
1:56 AM	60.1 °F	46.0 °F	60%	30.19 in	10.0 mi	East	13.8 mph	-	N/A	Clear
2:56 AM	57.9 °F	46.0 °F	65%	30.19 in	10.0 mi	ESE	8.1 mph	-	N/A	Clear
3:56 AM	57.9 °F	45.0 °F	62%	30.19 in	10.0 mi	East	9.2 mph	-	N/A	Clear
4:56 AM	59.0 °F	44.1 °F	58%	30.19 in	10.0 mi	ENE	6.9 mph	-	N/A	Clear
5:56 AM	59.0 °F	46.0 °F	62%	30.20 in	10.0 mi	ENE	6.9 mph	-	N/A	Clear
6:56 AM	57.9 °F	43.0 °F	58%	30.20 in	10.0 mi	Calm	Calm	-	N/A	Clear
7:56 AM	60.1 °F	42.1 °F	51%	30.21 in	10.0 mi	East	12.7 mph	-	N/A	Clear
8:56 AM	60.1 °F	46.0 °F	60%	30.22 in	10.0 mi	ENE	10.4 mph	-	N/A	Clear
9:56 AM	61.0 °F	46.9 °F	60%	30.23 in	10.0 mi	East	11.5 mph	-	N/A	Partly Cloudy
10:56 AM	62.1 °F	46.9 °F	58%	30.22 in	10.0 mi	ENE	10.4 mph	-	N/A	Partly Cloudy
11:56 AM	62.1 °F	48.9 °F	62%	30.20 in	10.0 mi	East	5.8 mph	-	N/A	Partly Cloudy
12:56 PM	64.9 °F	46.0 °F	50%	30.17 in	10.0 mi	Calm	Calm	-	N/A	Clear
1:56 PM	66.0 °F	44.1 °F	45%	30.16 in	10.0 mi	North	3.5 mph	-	N/A	Clear
2:56 PM	64.9 °F	45.0 °F	48%	30.14 in	10.0 mi	Calm	Calm	-	N/A	Partly Cloudy
3:56 PM	66.0 °F	44.1 °F	45%	30.13 in	10.0 mi	Calm	Calm	-	N/A	Partly Cloudy
4:56 PM	61.0 °F	46.9 °F	60%	30.13 in	10.0 mi	WNW	9.2 mph	-	N/A	Partly Cloudy
5:56 PM	57.9 °F	46.0 °F	65%	30.12 in	10.0 mi	West	9.2 mph	-	N/A	Partly Cloudy
6:56 PM	57.9 °F	46.0 °F	65%	30.13 in	10.0 mi	Calm	Calm	-	N/A	Clear
7:56 PM	57.0 °F	45.0 °F	64%	30.14 in	10.0 mi	WNW	4.6 mph	-	N/A	Clear
8:56 PM	55.0 °F	46.0 °F	72%	30.13 in	10.0 mi	Calm	Calm	-	N/A	Clear
9:56 PM	54.0 °F	46.0 °F	75%	30.12 in	10.0 mi	Calm	Calm	-	N/A	Clear
10:56 PM	54.0 °F	45.0 °F	72%	30.12 in	10.0 mi	Calm	Calm	-	N/A	Clear
11:56 PM	52.0 °F	44.1 °F	74%	30.11 in	10.0 mi	Calm	Calm	-	N/A	Clear
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