San Juan, PR

12:06 PM AST on September 25, 2016 (GMT -0400)
Luis Munoz Marin International

Weather History for TJSJ - December, 2012

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Saturday, December 15, 2012

  Actual Average Record
Temperature  
Mean Temperature 79 °F 79 °F  
Max Temperature 84 °F 84 °F 90 °F (1997)
Min Temperature 74 °F 73 °F 67 °F (1906)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 July heating degree days 0 0  
Cooling Degree Days 14 14  
Month to date cooling degree days 228 210  
Year to date cooling degree days 5933 5636  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 69 °F    
Average Humidity 78    
Maximum Humidity 93    
Minimum Humidity 62    
Precipitation  
Precipitation 0.10 in 0.17 in 3.28 in (1934)
Month to date precipitation 2.80 2.54  
Year to date precipitation 52.70 53.87  
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 2 mph (NNE)    
Max Wind Speed 12 mph    
Max Gust Speed 15 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Dec. 15, 2012 Rise Set
Actual Time 6:48 AM AST 5:50 PM AST
Civil Twilight 6:24 AM AST 6:14 PM AST
Nautical Twilight 5:57 AM AST 6:41 PM AST
Astronomical Twilight 5:30 AM AST 7:08 PM AST
Moon 8:51 AM AST (12/15) 8:33 PM AST (12/15)
Length of Visible Light 11h 49m
Length of Day
11h 01m
Waxing Crescent, 8% of the Moon is Illuminated
Dec 15
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (AST) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 75.9 °F - 69.1 °F 79% 29.92 in 10.0 mi Calm Calm - 0.00 in   Scattered Clouds
1:56 AM 75.9 °F - 69.1 °F 79% 29.91 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 75.9 °F - 68.0 °F 76% 29.89 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:56 AM 75.0 °F - 68.0 °F 79% 29.88 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:56 AM 75.0 °F - 68.0 °F 79% 29.88 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 AM 75.0 °F - 68.0 °F 79% 29.90 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:56 AM 73.9 °F - 70.0 °F 87% 29.91 in 10.0 mi NW 4.6 mph - 0.01 in Rain Light Rain
7:56 AM 73.9 °F - 71.1 °F 91% 29.95 in 7.0 mi Calm Calm - 0.02 in Rain Rain
8:56 AM 75.0 °F - 72.0 °F 90% 29.97 in 10.0 mi Calm Calm - 0.07 in   Mostly Cloudy
9:56 AM 75.9 °F - 71.1 °F 85% 29.99 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
10:56 AM 78.1 °F - 71.1 °F 79% 29.98 in 10.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
11:56 AM 81.0 °F 84.4 °F 70.0 °F 69% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:56 PM 82.0 °F 84.9 °F 68.0 °F 62% 29.91 in 10.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
1:56 PM 82.9 °F 85.8 °F 68.0 °F 60% 29.90 in 10.0 mi ENE 8.1 mph - N/A   Mostly Cloudy
2:56 PM 82.0 °F 85.5 °F 69.1 °F 65% 29.90 in 10.0 mi NNE 9.2 mph - N/A   Mostly Cloudy
3:56 PM 81.0 °F 84.1 °F 69.1 °F 67% 29.90 in 10.0 mi NNE 9.2 mph - N/A   Mostly Cloudy
4:56 PM 79.0 °F - 69.1 °F 72% 29.91 in 10.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
5:56 PM 79.0 °F - 66.9 °F 66% 29.92 in 10.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
6:56 PM 78.1 °F - 64.9 °F 64% 29.93 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
7:56 PM 79.0 °F - 64.9 °F 62% 29.94 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:56 PM 78.1 °F - 68.0 °F 71% 29.96 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:56 PM 77.0 °F - 69.1 °F 76% 29.97 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:56 PM 75.9 °F - 69.1 °F 79% 29.96 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:56 PM 75.9 °F - 68.0 °F 76% 29.96 in 10.0 mi Calm Calm - N/A   Scattered Clouds