Weather History for San Juan, PR

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Wednesday, July 31, 2013

  Actual Average Record
Temperature  
Mean Temperature 84 °F 84 °F  
Max Temperature 89 °F 89 °F 94 °F (1980)
Min Temperature 79 °F 78 °F 71 °F (1927)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 0 0  
Since 1 July heating degree days 0 0  
Cooling Degree Days 19 18  
Month to date cooling degree days 559 570  
Year to date cooling degree days 3323 3284  
Since 1 June cooling degree days 1075 1119  
Growing Degree Days 34 (Base 50)    
Moisture  
Dew Point 73 °F    
Average Humidity 69    
Maximum Humidity 79    
Minimum Humidity 59    
Precipitation  
Precipitation 0.01 in 0.16 in 1.87 in (1937)
Month to date precipitation 14.18 5.07  
Year to date precipitation 50.00 28.16  
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 6 mph (ENE)    
Max Wind Speed 16 mph    
Max Gust Speed 21 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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Astronomy

Jul. 31, 2013 Rise Set
Actual Time 6:01 AM AST 6:59 PM AST
Civil Twilight 5:38 AM AST 7:22 PM AST
Nautical Twilight 5:10 AM AST 7:49 PM AST
Astronomical Twilight 4:42 AM AST 8:17 PM AST
Moon 12:53 AM AST (7/31) 2:09 PM AST (7/31)
Length of Visible Light 13h 43m
Length of Day
12h 57m
Waning Crescent, 32% of the Moon is Illuminated
Jul 31
Waning Crescent
Aug 6
New
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last 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 81.0 °F 85.8 °F 73.0 °F 77% 30.04 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
1:56 AM 82.0 °F 87.4 °F 73.0 °F 74% 30.02 in 10.0 mi ENE 10.4 mph - N/A   Mostly Cloudy
2:56 AM 81.0 °F 85.2 °F 72.0 °F 74% 30.02 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
3:56 AM 81.0 °F 85.8 °F 73.0 °F 77% 30.01 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:56 AM 80.1 °F 84.2 °F 73.0 °F 79% 30.02 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 AM 80.1 °F 84.2 °F 73.0 °F 79% 30.03 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 80.1 °F 84.5 °F 73.9 °F 81% 30.04 in 10.0 mi Calm Calm - 0.01 in Rain Light Rain
7:56 AM 81.0 °F 86.2 °F 73.9 °F 79% 30.04 in 10.0 mi East 5.8 mph - 0.00 in   Scattered Clouds
8:56 AM 84.0 °F 90.2 °F 73.0 °F 69% 30.05 in 10.0 mi East 8.1 mph - N/A   Scattered Clouds
9:56 AM 87.1 °F 92.8 °F 71.1 °F 59% 30.06 in 10.0 mi East 10.4 mph - N/A   Scattered Clouds
10:56 AM 87.1 °F 93.6 °F 72.0 °F 61% 30.06 in 10.0 mi NE 11.5 mph - N/A   Scattered Clouds
11:56 AM 88.0 °F 95.6 °F 73.0 °F 61% 30.06 in 10.0 mi ENE 15.0 mph - N/A   Scattered Clouds
12:56 PM 88.0 °F 94.7 °F 72.0 °F 59% 30.03 in 10.0 mi NE 9.2 mph - N/A   Scattered Clouds
1:56 PM 88.0 °F 94.7 °F 72.0 °F 59% 30.01 in 10.0 mi NE 12.7 mph - N/A   Scattered Clouds
2:56 PM 87.1 °F 95.4 °F 73.9 °F 65% 30.00 in 10.0 mi ENE 10.4 mph 19.6 mph N/A   Scattered Clouds
3:56 PM 87.1 °F 95.4 °F 73.9 °F 65% 29.98 in 10.0 mi NE 11.5 mph - N/A   Scattered Clouds
4:56 PM 84.9 °F 92.1 °F 73.9 °F 69% 29.98 in 10.0 mi ENE 11.5 mph - N/A   Scattered Clouds
5:56 PM 84.0 °F 91.2 °F 73.9 °F 72% 29.98 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
6:56 PM 82.9 °F 89.4 °F 73.9 °F 74% 29.98 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
7:56 PM 82.9 °F 88.8 °F 73.0 °F 72% 30.00 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:56 PM 82.9 °F 89.4 °F 73.9 °F 74% 30.02 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
9:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 30.03 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:56 PM 81.0 °F 85.8 °F 73.0 °F 77% 30.03 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:56 PM 82.0 °F 87.4 °F 73.0 °F 74% 30.03 in 10.0 mi SE 3.5 mph - N/A   Partly Cloudy