Weather History for San Juan, PR

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Friday, December 28, 2012

  Actual Average Record
Temperature  
Mean Temperature 80 °F 78 °F  
Max Temperature 85 °F 83 °F 90 °F (1980)
Min Temperature 74 °F 73 °F 65 °F (1952)
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 15 13  
Month to date cooling degree days 412 382  
Year to date cooling degree days 6117 5814  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 70 °F    
Average Humidity 74    
Maximum Humidity 87    
Minimum Humidity 61    
Precipitation  
Precipitation 0.07 in 0.15 in 1.07 in (1908)
Month to date precipitation 5.20 4.58  
Year to date precipitation 55.10 55.91  
Sea Level Pressure  
Sea Level Pressure 30.01 in    
Wind  
Wind Speed 8 mph (East)    
Max Wind Speed 21 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 28, 2012 Rise Set
Actual Time 6:54 AM AST 5:56 PM AST
Civil Twilight 6:31 AM AST 6:20 PM AST
Nautical Twilight 6:03 AM AST 6:47 PM AST
Astronomical Twilight 5:36 AM AST 7:14 PM AST
Moon 6:21 PM AST (12/28) 6:52 AM AST (12/28)
Length of Visible Light 11h 49m
Length of Day
11h 02m
Full, 100% of the Moon is Illuminated
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 27
Full

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 77.0 °F - 72.0 °F 84% 30.02 in 10.0 mi Calm Calm - 0.00 in Rain Light Rain
1:56 AM 75.9 °F - 71.1 °F 85% 30.01 in 10.0 mi Calm Calm - 0.00 in   Scattered Clouds
2:56 AM 75.0 °F - 71.1 °F 87% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:56 AM 73.9 °F - 70.0 °F 87% 29.97 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 73.9 °F - 70.0 °F 87% 29.97 in 10.0 mi SE 3.5 mph - N/A   Partly Cloudy
5:56 AM 75.0 °F - 70.0 °F 84% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 75.0 °F - 70.0 °F 84% 30.00 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 75.9 °F - 70.0 °F 82% 30.03 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:56 AM 80.1 °F 83.6 °F 71.1 °F 74% 30.06 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
9:56 AM 82.0 °F 86.3 °F 71.1 °F 69% 30.07 in 10.0 mi East 12.7 mph - N/A   Scattered Clouds
10:56 AM 84.0 °F 89.0 °F 71.1 °F 65% 30.06 in 10.0 mi East 10.4 mph - N/A   Scattered Clouds
11:56 AM 84.0 °F 88.4 °F 70.0 °F 63% 30.05 in 10.0 mi East 18.4 mph 21.9 mph N/A   Scattered Clouds
12:56 PM 84.9 °F 89.4 °F 70.0 °F 61% 30.02 in 10.0 mi ENE 17.3 mph - N/A   Scattered Clouds
1:56 PM 84.0 °F 88.4 °F 70.0 °F 63% 30.01 in 10.0 mi East 16.1 mph - N/A   Scattered Clouds
2:56 PM 84.0 °F 87.8 °F 69.1 °F 61% 29.99 in 10.0 mi East 13.8 mph - N/A   Partly Cloudy
3:56 PM 82.9 °F 86.5 °F 69.1 °F 63% 29.98 in 10.0 mi ENE 17.3 mph 23.0 mph N/A   Partly Cloudy
4:56 PM 82.0 °F 85.9 °F 70.0 °F 67% 29.99 in 10.0 mi East 13.8 mph - N/A   Partly Cloudy
5:56 PM 80.1 °F 83.2 °F 70.0 °F 71% 29.99 in 10.0 mi East 11.5 mph - N/A   Partly Cloudy
6:56 PM 79.0 °F - 70.0 °F 74% 30.00 in 10.0 mi East 8.1 mph - N/A   Scattered Clouds
7:56 PM 79.0 °F - 71.1 °F 77% 30.01 in 10.0 mi East 9.2 mph - N/A   Scattered Clouds
8:56 PM 79.0 °F - 71.1 °F 77% 30.02 in 10.0 mi East 15.0 mph - N/A   Scattered Clouds
9:56 PM 78.1 °F - 70.0 °F 76% 30.03 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
10:56 PM 78.1 °F - 71.1 °F 79% 30.02 in 10.0 mi East 9.2 mph - 0.00 in   Mostly Cloudy
11:56 PM 77.0 °F - 72.0 °F 84% 30.02 in 10.0 mi ESE 5.8 mph - 0.07 in   Mostly Cloudy