Weather History for Napa County, CA

Wednesday, January 18, 2012 — View Current Weather Conditions

Wednesday, January 18, 2012

	Actual	Average	Record
Temperature
Mean Temperature	41 °F	46 °F
Max Temperature	56 °F	55 °F	70 °F (2009)
Min Temperature	26 °F	37 °F	24 °F (2001)
Degree Days
Heating Degree Days	24
Month to date heating degree days	346
Since 1 July heating degree days	1614
Cooling Degree Days	0
Month to date cooling degree days	0
Year to date cooling degree days	0
Moisture
Dew Point	33 °F
Average Humidity	73
Maximum Humidity	92
Minimum Humidity	54
Precipitation
Precipitation	0.00 in	-	1.47 in (1973)
Month to date precipitation	0.00
Year to date precipitation	0.00
Since 1 July precipitation	3.58
Sea Level Pressure
Sea Level Pressure	30.33 in
Wind
Wind Speed	3 mph (NNW)
Max Wind Speed	9 mph
Max Gust Speed	12 mph
Visibility	10 miles
Events

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

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Local Photos

	Afternoon Splendor!!! The waves lap gently ashore along the Sutro Bath Ruins in the Golden Gate National Recreation Area... The Sutro Bath Ruins are an interesting place to ...
	Winter Color
	Nuthatch My first nuthatch. It's through a "weathered" window but I'm pretty happy with it (for now).;)
	White-faced Ibis :)

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Astronomy

Jan. 18, 2012	Rise	Set
Actual Time	7:23 AM PST	5:15 PM PST
Civil Twilight	6:54 AM PST	5:44 PM PST
Nautical Twilight	6:22 AM PST	6:16 PM PST
Astronomical Twilight	5:50 AM PST	6:48 PM PST
Moon	2:58 AM PST (1/18)	12:59 PM PST (1/18)
Length Of Visible Light	10h 49m
Length of Day	9h 52m

Waning Crescent, 23% of the Moon is Illuminated
Jan 18 Waning Crescent	Jan 22 New	Jan 30 First Quarter	Feb 7 Full	Feb 14 Last Quarter

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Hourly Weather History & Observations

Time (PST)	Temp.	Windchill	Dew Point	Humidity	Pressure	Visibility	Wind Dir	Wind Speed	Gust Speed	Precip	Conditions
12:54 AM	28.0 °F	-	27.0 °F	96%	30.35 in	10.0 mi	Calm	Calm	-	N/A	Clear
1:54 AM	28.9 °F	25.2 °F	25.0 °F	85%	30.37 in	10.0 mi	North	3.5 mph	-	N/A	Clear
2:54 AM	33.1 °F	27.7 °F	28.9 °F	85%	30.36 in	10.0 mi	North	5.8 mph	-	N/A	Clear
3:54 AM	30.0 °F	24.1 °F	27.0 °F	88%	30.36 in	10.0 mi	NNE	5.8 mph	-	N/A	Clear
4:54 AM	30.9 °F	27.5 °F	28.0 °F	89%	30.36 in	10.0 mi	NNE	3.5 mph	-	N/A	Clear
5:54 AM	28.9 °F	23.9 °F	26.1 °F	89%	30.36 in	10.0 mi	North	4.6 mph	-	N/A	Clear
6:54 AM	28.0 °F	21.7 °F	26.1 °F	92%	30.37 in	10.0 mi	North	5.8 mph	-	N/A	Clear
7:54 AM	28.9 °F	-	27.0 °F	92%	30.38 in	10.0 mi	Calm	Calm	-	N/A	Clear
8:54 AM	37.0 °F	-	33.1 °F	86%	30.39 in	10.0 mi	Calm	Calm	-	N/A	Clear
9:54 AM	44.1 °F	-	36.0 °F	73%	30.40 in	10.0 mi	Calm	Calm	-	N/A	Mostly Cloudy
10:54 AM	48.0 °F	-	37.0 °F	66%	30.40 in	10.0 mi	Calm	Calm	-	N/A	Overcast
11:54 AM	51.1 °F	-	36.0 °F	56%	30.39 in	10.0 mi	NNE	3.5 mph	-	N/A	Mostly Cloudy
12:54 PM	51.1 °F	-	37.0 °F	59%	30.35 in	10.0 mi	SW	8.1 mph	-	N/A	Overcast
1:54 PM	53.1 °F	-	37.9 °F	57%	30.33 in	10.0 mi	SW	8.1 mph	-	N/A	Mostly Cloudy
2:54 PM	51.1 °F	-	37.9 °F	61%	30.32 in	10.0 mi	WSW	8.1 mph	-	N/A	Overcast
3:54 PM	51.1 °F	-	39.0 °F	63%	30.32 in	10.0 mi	SW	5.8 mph	-	N/A	Overcast
4:54 PM	51.1 °F	-	39.9 °F	66%	30.31 in	10.0 mi	WSW	5.8 mph	-	N/A	Overcast
5:54 PM	48.9 °F	-	39.9 °F	71%	30.29 in	10.0 mi	Calm	Calm	-	N/A	Overcast
6:54 PM	39.0 °F	-	34.0 °F	82%	30.29 in	10.0 mi	Calm	Calm	-	N/A	Clear
7:54 PM	39.0 °F	-	35.1 °F	86%	30.27 in	10.0 mi	Calm	Calm	-	N/A	Clear
8:54 PM	36.0 °F	33.3 °F	32.0 °F	86%	30.27 in	10.0 mi	North	3.5 mph	-	N/A	Clear
9:54 PM	36.0 °F	33.3 °F	32.0 °F	86%	30.27 in	10.0 mi	ESE	3.5 mph	-	N/A	Clear
10:54 PM	33.1 °F	30.0 °F	30.9 °F	92%	30.26 in	10.0 mi	SE	3.5 mph	-	N/A	Clear
11:54 PM	37.0 °F	-	35.1 °F	93%	30.25 in	10.0 mi	Calm	Calm	-	N/A	Clear
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