Weather History for KVSF - September, 2012

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Thursday, September 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 52 °F 58 °F  
Max Temperature 66 °F 69 °F 81 °F (1998)
Min Temperature 38 °F 46 °F 34 °F (2014)
Degree Days  
Heating Degree Days 13 8  
Month to date heating degree days 72 95  
Since 1 July heating degree days 78 150  
Cooling Degree Days 0 0  
Month to date cooling degree days 45 21  
Year to date cooling degree days 639 342  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 39 °F    
Average Humidity 69    
Maximum Humidity 100    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in 0.12 in 1.31 in (2001)
Month to date precipitation 1.97 2.27  
Year to date precipitation 24.16 30.64  
Sea Level Pressure  
Sea Level Pressure 30.24 in    
Wind  
Wind Speed 2 mph (SSE)    
Max Wind Speed 13 mph    
Max Gust Speed 20 mph    
Visibility 6 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 20, 2012 Rise Set
Actual Time 6:35 AM EDT 6:50 PM EDT
Civil Twilight 6:07 AM EDT 7:18 PM EDT
Nautical Twilight 5:33 AM EDT 7:52 PM EDT
Astronomical Twilight 4:59 AM EDT 8:26 PM EDT
Moon 12:00 PM EDT (9/20) 9:39 PM EDT (9/20)
Length of Visible Light 13h 11m
Length of Day
12h 14m
Waxing Crescent, 26% of the Moon is Illuminated
Sep 20
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:23 AM 42.8 °F 39.2 °F 87% 30.24 in 0.5 mi Calm Calm - N/A Fog Fog
12:41 AM 42.8 °F 39.2 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:54 AM 41.0 °F 37.9 °F 89% 30.25 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:19 AM 41.0 °F 37.4 °F 87% 30.25 in 1.8 mi Calm Calm - N/A   Clear
1:25 AM 41.0 °F 39.2 °F 93% 30.25 in 3.0 mi Calm Calm - N/A   Clear
1:54 AM 39.9 °F 37.0 °F 89% 30.26 in 1.5 mi Calm Calm - N/A   Partly Cloudy
2:04 AM 39.2 °F 37.4 °F 93% 30.25 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
2:13 AM 39.2 °F 37.4 °F 93% 30.25 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
2:41 AM 39.2 °F 35.6 °F 87% 30.25 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:54 AM 39.9 °F 37.0 °F 89% 30.26 in 9.0 mi Calm Calm - N/A   Clear
2:58 AM 39.2 °F 37.4 °F 93% 30.25 in 1.8 mi Calm Calm - N/A   Partly Cloudy
3:04 AM 37.4 °F 35.6 °F 93% 30.25 in 0.8 mi Calm Calm - N/A   Mist
3:54 AM 39.0 °F 37.0 °F 93% 30.27 in 0.2 mi Calm Calm - N/A Fog Fog
4:17 AM 37.4 °F 35.6 °F 93% 30.27 in 0.5 mi Calm Calm - N/A Fog Fog
4:54 AM 37.9 °F 37.0 °F 97% 30.30 in 0.2 mi Calm Calm - N/A Fog Fog
5:49 AM 39.2 °F 37.4 °F 93% 30.29 in 0.5 mi Calm Calm - N/A Fog Fog
6:06 AM 39.2 °F 35.6 °F 87% 30.29 in 0.5 mi Calm Calm - N/A Fog Fog
6:17 AM 39.2 °F 35.6 °F 87% 30.29 in 0.2 mi Calm Calm - N/A Fog Fog
6:27 AM 39.2 °F 37.4 °F 93% 30.30 in 0.5 mi Calm Calm - N/A Fog Fog
6:38 AM 39.2 °F 37.4 °F 93% 30.30 in 0.2 mi Calm Calm - N/A Fog Fog
6:54 AM 39.0 °F 37.0 °F 93% 30.32 in 0.2 mi Calm Calm - N/A Fog Fog
7:54 AM 39.0 °F 37.0 °F 93% 30.32 in 0.2 mi Calm Calm - N/A Fog Fog
8:54 AM 41.0 °F 39.0 °F 93% 30.32 in 0.2 mi Calm Calm - N/A Fog Fog
9:10 AM 42.8 °F 41.0 °F 93% 30.30 in 1.0 mi Calm Calm - N/A   Overcast
9:35 AM 46.4 °F 41.0 °F 81% 30.30 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:54 AM 48.9 °F 41.0 °F 74% 30.30 in 10.0 mi Calm Calm - N/A   Clear
10:54 AM 55.9 °F 37.0 °F 49% 30.28 in 10.0 mi East 3.5 mph - N/A   Clear
11:54 AM 59.0 °F 37.0 °F 44% 30.25 in 10.0 mi South 5.8 mph - N/A   Clear
12:54 PM 62.1 °F 37.9 °F 41% 30.22 in 10.0 mi SE 9.2 mph - N/A   Clear
1:54 PM 64.0 °F 39.0 °F 40% 30.19 in 10.0 mi Variable 5.8 mph - N/A   Clear
2:54 PM 66.0 °F 39.9 °F 38% 30.18 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
3:54 PM 66.0 °F 41.0 °F 40% 30.16 in 10.0 mi SE 10.4 mph - N/A   Partly Cloudy
4:54 PM 66.0 °F 41.0 °F 40% 30.15 in 10.0 mi SSE 8.1 mph - N/A   Scattered Clouds
5:54 PM 63.0 °F 42.1 °F 46% 30.15 in 10.0 mi South 4.6 mph - N/A   Partly Cloudy
6:54 PM 59.0 °F 44.1 °F 58% 30.16 in 10.0 mi Calm Calm - N/A   Clear
7:54 PM 53.1 °F 46.9 °F 80% 30.16 in 10.0 mi Calm Calm - N/A   Clear
8:54 PM 50.0 °F 45.0 °F 83% 30.17 in 10.0 mi Calm Calm - N/A   Clear
9:54 PM 48.0 °F 44.1 °F 86% 30.17 in 10.0 mi Calm Calm - N/A   Clear
10:54 PM 46.9 °F 43.0 °F 86% 30.18 in 10.0 mi Calm Calm - N/A   Clear
11:54 PM 46.0 °F 42.1 °F 86% 30.17 in 10.0 mi Calm Calm - N/A   Clear