Weather History for San Juan, PR

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Sunday, September 1, 2013

  Actual Average Record
Temperature  
Mean Temperature 85 °F 84 °F  
Max Temperature 89 °F 89 °F 97 °F (1981)
Min Temperature 80 °F 78 °F 70 °F (1942)
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 20 19  
Month to date cooling degree days 20 19  
Year to date cooling degree days 3936 3883  
Growing Degree Days 34 (Base 50)    
Moisture  
Dew Point 76 °F    
Average Humidity 75    
Maximum Humidity 85    
Minimum Humidity 64    
Precipitation  
Precipitation 0.01 in 0.20 in 3.19 in (1899)
Month to date precipitation 0.01 0.20  
Year to date precipitation 57.43 33.82  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 9 mph (ENE)    
Max Wind Speed 18 mph    
Max Gust Speed 22 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

Sep. 01, 2013 Rise Set
Actual Time 6:09 AM AST 6:38 PM AST
Civil Twilight 5:47 AM AST 7:00 PM AST
Nautical Twilight 5:21 AM AST 7:25 PM AST
Astronomical Twilight 4:55 AM AST 7:52 PM AST
Moon 2:47 AM AST (9/1) 3:56 PM AST (9/1)
Length of Visible Light 13h 12m
Length of Day
12h 28m
Waning Crescent, 14% of the Moon is Illuminated
Sep 1
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
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 82.0 °F 90.2 °F 77.0 °F 85% 29.98 in 10.0 mi East 6.9 mph - 0.01 in Rain Light Rain
1:56 AM 82.0 °F 90.2 °F 77.0 °F 85% 29.96 in 10.0 mi Calm Calm - 0.00 in   Partly Cloudy
2:56 AM 82.0 °F 89.4 °F 75.9 °F 82% 29.96 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:56 AM 81.0 °F 87.3 °F 75.9 °F 85% 29.95 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 82.0 °F 89.4 °F 75.9 °F 82% 29.95 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 AM 81.0 °F 87.3 °F 75.9 °F 85% 29.95 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 81.0 °F 87.3 °F 75.9 °F 85% 29.96 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 82.9 °F 91.8 °F 77.0 °F 82% 29.97 in 10.0 mi Calm Calm - 0.00 in Rain Light Rain
8:56 AM 86.0 °F 96.9 °F 77.0 °F 74% 29.97 in 10.0 mi ENE 10.4 mph - 0.00 in   Scattered Clouds
9:56 AM 87.1 °F 97.3 °F 75.9 °F 69% 29.99 in 10.0 mi NE 15.0 mph - N/A   Scattered Clouds
10:56 AM 88.0 °F 100.2 °F 77.0 °F 70% 29.99 in 10.0 mi NE 15.0 mph 19.6 mph N/A   Scattered Clouds
11:15 AM 87.8 °F 97.6 °F 75.2 °F 66% 29.99 in 10.0 mi ENE 13.8 mph - N/A   Mostly Cloudy
11:17 AM 87.8 °F 97.6 °F 75.2 °F 66% 29.99 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
11:56 AM 88.0 °F 98.5 °F 75.9 °F 67% 29.99 in 10.0 mi ENE 15.0 mph - N/A   Scattered Clouds
12:56 PM 89.1 °F 99.1 °F 75.0 °F 63% 29.97 in 10.0 mi East 13.8 mph - N/A   Scattered Clouds
1:56 PM 88.0 °F 97.5 °F 75.0 °F 65% 29.96 in 10.0 mi ENE 16.1 mph 20.7 mph N/A   Scattered Clouds
2:56 PM 87.1 °F 96.3 °F 75.0 °F 67% 29.94 in 9.0 mi ENE 13.8 mph - N/A   Scattered Clouds
3:56 PM 87.1 °F 96.3 °F 75.0 °F 67% 29.93 in 10.0 mi ENE 16.1 mph - N/A   Scattered Clouds
4:56 PM 86.0 °F 95.1 °F 75.0 °F 70% 29.92 in 10.0 mi ENE 13.8 mph - N/A   Scattered Clouds
5:56 PM 84.9 °F 93.3 °F 75.0 °F 72% 29.93 in 10.0 mi ENE 11.5 mph - N/A   Scattered Clouds
6:56 PM 84.0 °F 91.9 °F 75.0 °F 74% 29.94 in 10.0 mi ENE 9.2 mph - N/A   Scattered Clouds
7:56 PM 84.0 °F 91.9 °F 75.0 °F 74% 29.96 in 10.0 mi ENE 10.4 mph - N/A   Scattered Clouds
8:56 PM 84.0 °F 91.9 °F 75.0 °F 74% 29.98 in 10.0 mi ENE 11.5 mph - N/A   Scattered Clouds
9:56 PM 84.0 °F 91.2 °F 73.9 °F 72% 29.99 in 10.0 mi ENE 10.4 mph - N/A   Partly Cloudy
10:56 PM 82.9 °F 90.2 °F 75.0 °F 77% 29.99 in 10.0 mi ENE 9.2 mph - N/A   Scattered Clouds
11:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 29.97 in 10.0 mi East 8.1 mph - N/A   Scattered Clouds