Weather History for San Juan, PR

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Saturday, April 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 80 °F 80 °F  
Max Temperature 83 °F 86 °F 94 °F (1997)
Min Temperature 76 °F 75 °F 67 °F (1968)
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 16  
Month to date cooling degree days 336 301  
Year to date cooling degree days 1587 1483  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 69 °F    
Average Humidity 75    
Maximum Humidity 87    
Minimum Humidity 63    
Precipitation  
Precipitation T in 0.17 in 3.87 in (1983)
Month to date precipitation 2.90 2.78  
Year to date precipitation 8.94 10.88  
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 15 mph (East)    
Max Wind Speed 26 mph    
Max Gust Speed 33 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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Astronomy

Apr. 20, 2013 Rise Set
Actual Time 6:03 AM AST 6:42 PM AST
Civil Twilight 5:41 AM AST 7:04 PM AST
Nautical Twilight 5:14 AM AST 7:31 PM AST
Astronomical Twilight 4:48 AM AST 7:57 PM AST
Moon 2:04 PM AST (4/20) 2:05 AM AST (4/20)
Length of Visible Light 13h 23m
Length of Day
12h 38m
Waxing Gibbous, 71% of the Moon is Illuminated
Apr 20
Waxing Gibbous
Apr 25
Full
May 2
Last Quarter
May 9
New
May 18
First Quarter

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 - 69.1 °F 76% 30.05 in 10.0 mi East 18.4 mph 26.5 mph 0.00 in   Scattered Clouds
1:56 AM 77.0 °F - 70.0 °F 79% 30.03 in 10.0 mi East 13.8 mph - N/A   Overcast
1:58 AM 77.0 °F - 69.8 °F 78% 30.03 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
2:56 AM 77.0 °F - 70.0 °F 79% 30.02 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
3:56 AM 75.9 °F - 69.1 °F 79% 30.02 in 10.0 mi East 12.7 mph - 0.00 in   Mostly Cloudy
4:56 AM 77.0 °F - 70.0 °F 79% 30.02 in 10.0 mi ENE 12.7 mph - N/A   Scattered Clouds
5:56 AM 75.9 °F - 71.1 °F 85% 30.04 in 10.0 mi East 10.4 mph - 0.00 in   Mostly Cloudy
6:56 AM 75.9 °F - 69.1 °F 79% 30.05 in 8.0 mi East 13.8 mph 28.8 mph 0.00 in Rain Light Rain
7:56 AM 79.0 °F - 69.1 °F 72% 30.07 in 9.0 mi East 13.8 mph - 0.00 in   Mostly Cloudy
8:56 AM 79.0 °F - 70.0 °F 74% 30.08 in 9.0 mi East 19.6 mph 26.5 mph N/A   Mostly Cloudy
9:56 AM 81.0 °F 84.1 °F 69.1 °F 67% 30.09 in 9.0 mi East 15.0 mph 24.2 mph 0.00 in   Mostly Cloudy
10:56 AM 81.0 °F 85.2 °F 72.0 °F 74% 30.09 in 9.0 mi ENE 19.6 mph 27.6 mph N/A   Overcast
11:56 AM 81.0 °F 84.1 °F 69.1 °F 67% 30.07 in 9.0 mi ENE 20.7 mph 32.2 mph N/A   Mostly Cloudy
12:56 PM 81.0 °F 83.8 °F 68.0 °F 65% 30.05 in 9.0 mi East 19.6 mph - N/A   Mostly Cloudy
1:56 PM 82.0 °F 84.9 °F 68.0 °F 62% 30.04 in 10.0 mi East 16.1 mph 26.5 mph N/A   Mostly Cloudy
2:56 PM 82.0 °F 84.9 °F 68.0 °F 62% 30.01 in 9.0 mi East 17.3 mph 23.0 mph 0.00 in Rain Light Rain
3:56 PM 81.0 °F 84.1 °F 69.1 °F 67% 30.00 in 9.0 mi ENE 17.3 mph 25.3 mph 0.00 in Rain Light Rain
4:56 PM 80.1 °F 82.9 °F 69.1 °F 69% 30.00 in 9.0 mi East 16.1 mph - 0.00 in Rain Light Rain
5:56 PM 80.1 °F 83.2 °F 70.0 °F 71% 30.01 in 10.0 mi East 16.1 mph 24.2 mph N/A   Mostly Cloudy
6:56 PM 79.0 °F - 69.1 °F 72% 30.03 in 9.0 mi East 15.0 mph 26.5 mph 0.00 in Rain Light Rain
7:56 PM 78.1 °F - 68.0 °F 71% 30.06 in 10.0 mi East 12.7 mph - N/A   Scattered Clouds
8:56 PM 78.1 °F - 69.1 °F 74% 30.06 in 10.0 mi East 11.5 mph - N/A   Scattered Clouds
9:56 PM 78.1 °F - 70.0 °F 76% 30.06 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
10:56 PM 78.1 °F - 68.0 °F 71% 30.07 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
11:56 PM 77.0 °F - 69.1 °F 76% 30.06 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds