Weather History for KLSF - December, 2011

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Tuesday, December 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 54 °F -  
Max Temperature 67 °F 55 °F 73 °F (2008)
Min Temperature 42 °F 31 °F 12 °F (1996)
Degree Days  
Heating Degree Days 10    
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 95    
Maximum Humidity 100    
Minimum Humidity 63    
Precipitation  
Precipitation 0.35 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 1 mph (SE)    
Max Wind Speed 12 mph    
Max Gust Speed 18 mph    
Visibility 6 miles    
Events Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 20, 2011 Rise Set
Actual Time 7:36 AM EST 5:38 PM EST
Civil Twilight 7:09 AM EST 6:05 PM EST
Nautical Twilight 6:38 AM EST 6:36 PM EST
Astronomical Twilight 6:08 AM EST 7:06 PM EST
Moon 3:04 AM EST (12/20) 2:07 PM EST (12/20)
Length of Visible Light 10h 56m
Length of Day
10h 01m
Waning Crescent, 21% of the Moon is Illuminated
Dec 20
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:18 AM 42.8 °F - 41.0 °F 93% 30.18 in 2.5 mi Calm Calm - N/A   Clear
12:19 AM 42.8 °F - 41.0 °F 93% 30.18 in 2.0 mi Calm Calm - N/A   Clear
12:20 AM 42.8 °F - 41.0 °F 93% 30.18 in 1.8 mi Calm Calm - N/A   Clear
12:21 AM 42.8 °F - 41.0 °F 93% 30.18 in 1.2 mi Calm Calm - N/A   Clear
12:23 AM 42.8 °F - 41.0 °F 93% 30.18 in 1.0 mi Calm Calm - N/A   Clear
12:24 AM 42.8 °F - 42.8 °F 100% 30.18 in 1.0 mi Calm Calm - N/A   Clear
12:27 AM 42.8 °F - 42.8 °F 100% 30.18 in 1.0 mi Calm Calm - N/A   Clear
12:28 AM 42.8 °F - 42.8 °F 100% 30.18 in 1.0 mi Calm Calm - N/A   Clear
12:29 AM 42.8 °F - 42.8 °F 100% 30.18 in 1.2 mi Calm Calm - N/A   Clear
12:30 AM 42.8 °F - 42.8 °F 100% 30.18 in 1.5 mi Calm Calm - N/A   Clear
12:31 AM 42.8 °F - 42.8 °F 100% 30.18 in 2.0 mi Calm Calm - N/A   Clear
12:33 AM 42.8 °F - 42.8 °F 100% 30.18 in 3.0 mi Calm Calm - N/A   Clear
12:41 AM 44.6 °F - 44.6 °F 100% 30.17 in 3.0 mi Calm Calm - N/A   Clear
12:43 AM 44.6 °F - 44.6 °F 100% 30.17 in 2.5 mi Calm Calm - N/A   Clear
12:47 AM 44.6 °F - 44.6 °F 100% 30.17 in 2.5 mi Calm Calm - N/A   Clear
12:49 AM 44.6 °F - 44.6 °F 100% 30.17 in 3.0 mi Calm Calm - N/A   Clear
12:55 AM 44.6 °F - 44.2 °F 99% 30.17 in 7.0 mi Calm Calm - N/A   Clear
12:59 AM 44.6 °F - 44.6 °F 100% 30.17 in 2.5 mi Calm Calm - N/A   Clear
1:01 AM 44.6 °F - 42.8 °F 93% 30.17 in 2.5 mi Calm Calm - N/A   Clear
1:03 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.8 mi Calm Calm - N/A   Clear
1:04 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.5 mi Calm Calm - N/A   Clear
1:05 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.2 mi Calm Calm - N/A   Clear
1:08 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.0 mi Calm Calm - N/A   Clear
1:10 AM 42.8 °F - 42.8 °F 100% 30.17 in 0.8 mi Calm Calm - N/A   Clear
1:20 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.0 mi Calm Calm - N/A   Partly Cloudy
1:24 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.2 mi Calm Calm - N/A   Partly Cloudy
1:25 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.2 mi Calm Calm - N/A   Partly Cloudy
1:26 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.8 mi Calm Calm - N/A   Partly Cloudy
1:27 AM 42.8 °F - 42.8 °F 100% 30.17 in 2.0 mi Calm Calm - N/A   Scattered Clouds
1:28 AM 42.8 °F - 42.8 °F 100% 30.17 in 2.5 mi Calm Calm - N/A   Scattered Clouds
1:29 AM 42.8 °F - 42.8 °F 100% 30.17 in 3.0 mi Calm Calm - N/A   Scattered Clouds
1:36 AM 42.8 °F - 42.8 °F 100% 30.17 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
1:39 AM 44.6 °F - 42.8 °F 93% 30.17 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
1:40 AM 44.6 °F - 42.8 °F 93% 30.17 in 1.8 mi Calm Calm - N/A   Mostly Cloudy
1:47 AM 44.6 °F - 42.8 °F 93% 30.17 in 1.8 mi Calm Calm - N/A   Scattered Clouds
1:48 AM 44.6 °F - 44.6 °F 100% 30.17 in 2.0 mi Calm Calm - N/A   Scattered Clouds
1:54 AM 44.6 °F - 44.6 °F 100% 30.17 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
1:55 AM 44.1 °F - 43.9 °F 99% 30.17 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
1:57 AM 44.6 °F - 44.6 °F 100% 30.16 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
1:58 AM 44.6 °F - 44.6 °F 100% 30.16 in 3.0 mi Calm Calm - N/A   Scattered Clouds
2:05 AM 42.8 °F - 42.8 °F 100% 30.17 in 2.5 mi Calm Calm - N/A   Partly Cloudy
2:07 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.8 mi Calm Calm - N/A   Partly Cloudy
2:08 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.8 mi Calm Calm - N/A   Partly Cloudy
2:09 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.5 mi Calm Calm - N/A   Partly Cloudy
2:10 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.5 mi Calm Calm - N/A   Partly Cloudy
2:11 AM 42.8 °F - 42.8 °F 100% 30.17 in 1.2 mi Calm Calm - N/A   Partly Cloudy
2:22 AM 44.6 °F - 42.8 °F 93% 30.17 in 1.0 mi Calm Calm - N/A   Mostly Cloudy
2:25 AM 44.6 °F - 44.6 °F 100% 30.16 in 1.2 mi Calm Calm - N/A   Mostly Cloudy
2:26 AM 44.6 °F - 44.6 °F 100% 30.16 in 1.2 mi Calm Calm - N/A   Mostly Cloudy
2:27 AM 44.6 °F - 44.6 °F 100% 30.16 in 1.2 mi Calm Calm - N/A   Mostly Cloudy
2:28 AM 44.6 °F - 44.6 °F 100% 30.16 in 1.5 mi Calm Calm - N/A   Mostly Cloudy
2:30 AM 44.6 °F - 44.6 °F 100% 30.16 in 1.8 mi Calm Calm - N/A   Mostly Cloudy
2:31 AM 44.6 °F - 44.6 °F 100% 30.16 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
2:32 AM 44.6 °F - 44.6 °F 100% 30.16 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
2:55 AM 46.8 °F - 46.4 °F 99% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 44.4 °F 42.0 °F 43.7 °F 97% 30.14 in 6.0 mi NW 4.6 mph - N/A   Scattered Clouds
3:57 AM 44.6 °F 42.2 °F 42.8 °F 93% 30.14 in 6.0 mi NW 4.6 mph - N/A   Scattered Clouds
3:58 AM 44.6 °F 42.2 °F 42.8 °F 93% 30.14 in 6.0 mi NW 4.6 mph - N/A   Scattered Clouds
4:55 AM 48.2 °F - 47.7 °F 98% 30.14 in 10.0 mi Calm Calm - N/A   Overcast
5:55 AM 46.0 °F - 44.8 °F 95% 30.14 in 10.0 mi Calm Calm - N/A   Clear
6:55 AM 48.2 °F - 47.8 °F 99% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
7:55 AM 49.8 °F - 48.6 °F 95% 30.16 in 10.0 mi Calm Calm - N/A   Overcast
8:55 AM 51.4 °F - 49.5 °F 93% 30.17 in 10.0 mi Calm Calm - N/A   Overcast
9:40 AM 53.6 °F - 50.0 °F 88% 30.18 in 10.0 mi Calm Calm - N/A Rain Light Rain
9:49 AM 53.6 °F - 51.8 °F 94% 30.19 in 10.0 mi Calm Calm - N/A   Overcast
9:55 AM 54.7 °F - 51.1 °F 88% 30.19 in 10.0 mi Calm Calm - 0.00 in   Overcast
10:13 AM 55.4 °F - 51.8 °F 88% 30.19 in 10.0 mi Calm Calm - N/A Rain Light Rain
10:53 AM 57.2 °F - 53.6 °F 88% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
10:55 AM 56.8 °F - 54.0 °F 90% 30.18 in 10.0 mi Calm Calm - 0.01 in   Overcast
10:57 AM 57.2 °F - 53.6 °F 88% 30.18 in 10.0 mi Calm Calm - N/A Rain Light Rain
11:14 AM 57.2 °F - 55.4 °F 94% 30.17 in 10.0 mi Calm Calm - N/A   Overcast
11:55 AM 60.4 °F - 57.4 °F 90% 30.15 in 10.0 mi Calm Calm - 0.00 in   Overcast
12:43 PM 62.6 °F - 59.0 °F 88% 30.12 in 8.0 mi Calm Calm - N/A Rain Rain
12:54 PM 64.4 °F - 59.0 °F 83% 30.12 in 10.0 mi SE 4.6 mph - N/A   Overcast
12:55 PM 63.9 °F - 59.2 °F 85% 30.11 in 10.0 mi SE 5.8 mph - 0.01 in   Overcast
12:56 PM 64.4 °F - 59.0 °F 83% 30.11 in 10.0 mi SE 6.9 mph - N/A   Light Drizzle
1:08 PM 64.4 °F - 59.0 °F 83% 30.11 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:55 PM 66.6 °F - 57.7 °F 73% 30.09 in 10.0 mi South 11.5 mph 18.4 mph 0.00 in   Overcast
2:55 PM 67.6 °F - 54.7 °F 63% 30.07 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
3:55 PM 66.4 °F - 57.0 °F 72% 30.07 in 10.0 mi SSE 8.1 mph - N/A   Overcast
4:10 PM 66.2 °F - 57.2 °F 73% 30.08 in 10.0 mi South 4.6 mph - N/A Rain Light Rain
4:29 PM 66.2 °F - 55.4 °F 68% 30.09 in 10.0 mi South 4.6 mph - N/A   Overcast
4:34 PM 66.2 °F - 55.4 °F 68% 30.08 in 10.0 mi SSE 5.8 mph - N/A Rain Light Rain
4:38 PM 64.4 °F - 57.2 °F 77% 30.08 in 9.0 mi SE 6.9 mph - N/A Rain Light Rain
4:55 PM 62.4 °F - 58.1 °F 86% 30.08 in 7.0 mi ESE 6.9 mph - 0.02 in Rain Light Rain
5:00 PM 62.6 °F - 57.2 °F 82% 30.08 in 6.0 mi ESE 6.9 mph - N/A   Haze
5:02 PM 62.6 °F - 57.2 °F 82% 30.08 in 6.0 mi ESE 8.1 mph - N/A   Light Drizzle
5:07 PM 62.6 °F - 59.0 °F 88% 30.08 in 5.0 mi ESE 5.8 mph - N/A Rain Light Rain
5:47 PM 60.8 °F - 59.0 °F 94% 30.08 in 6.0 mi ESE 3.5 mph - N/A Rain Light Rain
5:55 PM 60.3 °F - 58.6 °F 94% 30.07 in 7.0 mi East 3.5 mph - 0.04 in Rain Light Rain
5:57 PM 60.8 °F - 59.0 °F 94% 30.07 in 7.0 mi East 4.6 mph - N/A Rain Light Rain
6:02 PM 60.8 °F - 59.0 °F 94% 30.07 in 9.0 mi East 5.8 mph - N/A   Overcast
6:18 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi Calm Calm - N/A Rain Light Rain
6:34 PM 60.8 °F - 59.0 °F 94% 30.09 in 9.0 mi Calm Calm - N/A   Overcast
6:43 PM 59.0 °F - 59.0 °F 100% 30.08 in 10.0 mi Calm Calm - N/A Rain Light Rain
6:55 PM 59.4 °F - 58.8 °F 98% 30.09 in 10.0 mi Calm Calm - 0.01 in Rain Light Rain
7:24 PM 59.0 °F - 59.0 °F 100% 30.10 in 6.0 mi Calm Calm - N/A Rain Light Rain
7:25 PM 59.0 °F - 59.0 °F 100% 30.10 in 6.0 mi Calm Calm - N/A Rain Heavy Rain
7:31 PM 59.0 °F - 59.0 °F 100% 30.10 in 2.5 mi West 3.5 mph - N/A Rain Heavy Rain
7:32 PM 59.0 °F - 59.0 °F 100% 30.10 in 2.5 mi West 3.5 mph - N/A Rain Heavy Rain
7:34 PM 59.0 °F - 59.0 °F 100% 30.11 in 2.0 mi West 3.5 mph - N/A Rain Heavy Rain
7:35 PM 59.0 °F - 59.0 °F 100% 30.11 in 2.0 mi West 3.5 mph - N/A Rain Heavy Rain
7:37 PM 60.8 °F - 59.0 °F 94% 30.11 in 2.5 mi Calm Calm - N/A Rain Heavy Rain
7:42 PM 60.8 °F - 59.0 °F 94% 30.11 in 2.0 mi Calm Calm - N/A Rain Heavy Rain
7:46 PM 60.8 °F - 59.0 °F 94% 30.11 in 2.0 mi Calm Calm - N/A Rain Heavy Rain
7:51 PM 60.8 °F - 59.0 °F 94% 30.11 in 3.0 mi Calm Calm - N/A Rain Rain
7:53 PM 60.8 °F - 59.0 °F 94% 30.11 in 4.0 mi Calm Calm - N/A Rain Rain
7:55 PM 59.9 °F - 59.4 °F 98% 30.11 in 4.0 mi Calm Calm - 0.18 in Rain Light Rain
7:57 PM 60.8 °F - 59.0 °F 94% 30.10 in 4.0 mi Calm Calm - N/A Rain Rain
8:00 PM 59.0 °F - 59.0 °F 100% 30.10 in 4.0 mi Calm Calm - N/A Rain Light Rain
8:04 PM 59.0 °F - 59.0 °F 100% 30.10 in 5.0 mi Calm Calm - N/A Rain Light Rain
8:14 PM 59.0 °F - 59.0 °F 100% 30.10 in 10.0 mi ENE 3.5 mph - N/A   Overcast
8:22 PM 59.0 °F - 59.0 °F 100% 30.10 in 10.0 mi East 4.6 mph - N/A   Light Drizzle
8:24 PM 59.0 °F - 59.0 °F 100% 30.10 in 10.0 mi East 4.6 mph - N/A   Light Drizzle
8:26 PM 59.0 °F - 59.0 °F 100% 30.10 in 10.0 mi East 4.6 mph - N/A   Light Drizzle
8:32 PM 59.0 °F - 59.0 °F 100% 30.10 in 10.0 mi ESE 4.6 mph - N/A   Overcast
8:35 PM 59.0 °F - 59.0 °F 100% 30.09 in 10.0 mi ESE 3.5 mph - N/A   Light Drizzle
8:55 PM 59.9 °F - 59.5 °F 99% 30.09 in 10.0 mi ESE 4.6 mph - 0.01 in Rain Light Rain
8:58 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi ESE 4.6 mph - N/A   Overcast
9:07 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi ESE 4.6 mph - N/A Rain Light Rain
9:17 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi ESE 3.5 mph - N/A   Overcast
9:24 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi Calm Calm - N/A Rain Light Rain
9:38 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi ESE 4.6 mph - N/A   Overcast
9:48 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi East 3.5 mph - N/A Rain Light Rain
9:55 PM 60.3 °F - 59.2 °F 96% 30.09 in 10.0 mi ESE 3.5 mph - 0.01 in Rain Light Rain
10:07 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
10:12 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi Calm Calm - N/A   Light Drizzle
10:22 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
10:23 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Light Drizzle
10:28 PM 60.8 °F - 59.0 °F 94% 30.09 in 9.0 mi SE 3.5 mph - N/A Rain Light Rain
10:36 PM 60.8 °F - 59.0 °F 94% 30.09 in 4.0 mi SE 5.8 mph - N/A Rain Light Rain
10:38 PM 60.8 °F - 59.0 °F 94% 30.08 in 4.0 mi SE 4.6 mph - N/A Rain Light Rain
10:39 PM 60.8 °F - 59.0 °F 94% 30.09 in 4.0 mi SE 4.6 mph - N/A Rain Light Rain
10:41 PM 60.8 °F - 59.0 °F 94% 30.09 in 4.0 mi SE 4.6 mph - N/A Rain Light Rain
10:42 PM 60.8 °F - 59.0 °F 94% 30.09 in 4.0 mi SE 4.6 mph - N/A Rain Light Rain
10:43 PM 60.8 °F - 59.0 °F 94% 30.09 in 4.0 mi SE 4.6 mph - N/A Rain Light Rain
10:46 PM 60.8 °F - 59.0 °F 94% 30.08 in 6.0 mi SE 5.8 mph - N/A Rain Light Rain
10:48 PM 60.8 °F - 59.0 °F 94% 30.08 in 7.0 mi SE 4.6 mph - N/A Rain Light Rain
10:55 PM 59.9 °F - 59.4 °F 98% 30.08 in 10.0 mi SE 3.5 mph - 0.05 in   Light Drizzle
11:00 PM 60.8 °F - 59.0 °F 94% 30.08 in 9.0 mi SSE 3.5 mph - N/A Rain Light Rain
11:04 PM 60.8 °F - 59.0 °F 94% 30.08 in 6.0 mi Calm Calm - N/A Rain Light Rain
11:06 PM 60.8 °F - 59.0 °F 94% 30.08 in 5.0 mi Calm Calm - N/A Rain Light Rain
11:09 PM 60.8 °F - 59.0 °F 94% 30.08 in 5.0 mi Calm Calm - N/A Rain Light Rain
11:10 PM 60.8 °F - 59.0 °F 94% 30.08 in 5.0 mi Calm Calm - N/A Rain Light Rain
11:13 PM 60.8 °F - 59.0 °F 94% 30.08 in 7.0 mi Calm Calm - N/A Rain Light Rain
11:17 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:22 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Light Drizzle
11:27 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Light Drizzle
11:29 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Light Drizzle
11:30 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Light Drizzle
11:31 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:36 PM 60.8 °F - 59.0 °F 94% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
11:42 PM 60.8 °F - 59.0 °F 94% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:47 PM 59.0 °F - 59.0 °F 100% 30.08 in 10.0 mi Calm Calm - N/A Rain Light Rain
11:49 PM 59.0 °F - 59.0 °F 100% 30.08 in 9.0 mi Calm Calm - N/A Rain Light Rain
11:55 PM 59.9 °F - 59.5 °F 99% 30.08 in 8.0 mi Calm Calm - 0.01 in Rain Light Rain
11:56 PM 60.8 °F - 59.0 °F 94% 30.08 in 7.0 mi Calm Calm - N/A Rain Light Rain
11:58 PM 59.0 °F - 59.0 °F 100% 30.08 in 6.0 mi Calm Calm - N/A Rain Light Rain