Weather History for San Juan, PR

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Monday, October 17, 2011

  Actual Average Record
Temperature  
Mean Temperature 82 °F 83 °F  
Max Temperature 87 °F 89 °F 95 °F (1980)
Min Temperature 76 °F 77 °F 69 °F (1908)
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 17 18  
Month to date cooling degree days 300 306  
Year to date cooling degree days 4511 4725  
Growing Degree Days 31 (Base 50)    
Moisture  
Dew Point 73 °F    
Average Humidity 79    
Maximum Humidity 94    
Minimum Humidity 63    
Precipitation  
Precipitation 0.04 in 0.18 in 2.53 in (1958)
Month to date precipitation 1.70 2.80  
Year to date precipitation 71.41 42.19  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Since 1 September snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.89 in    
Wind  
Wind Speed 7 mph (East)    
Max Wind Speed 21 mph    
Max Gust Speed 25 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

Oct. 17, 2011 Rise Set
Actual Time 6:18 AM AST 6:00 PM AST
Civil Twilight 5:56 AM AST 6:22 PM AST
Nautical Twilight 5:30 AM AST 6:47 PM AST
Astronomical Twilight 5:05 AM AST 7:13 PM AST
Moon 10:09 PM AST (10/17) 10:48 AM AST (10/17)
Length of Visible Light 12h 26m
Length of Day
11h 42m
Waning Gibbous, 74% of the Moon is Illuminated
Oct 17
Waning Gibbous
Oct 19
Last Quarter
Oct 26
New
Nov 2
First Quarter
Nov 10
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 78.1 °F - 73.9 °F 87% 29.91 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:56 AM 77.0 °F - 73.0 °F 88% 29.89 in 10.0 mi Calm Calm - 0.02 in   Scattered Clouds
2:56 AM 75.9 °F - 73.0 °F 91% 29.88 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:56 AM 77.0 °F - 73.0 °F 88% 29.88 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 77.0 °F - 73.0 °F 88% 29.88 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:56 AM 77.0 °F - 73.0 °F 88% 29.90 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 77.0 °F - 73.0 °F 88% 29.91 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 79.0 °F - 73.0 °F 82% 29.93 in 10.0 mi SE 3.5 mph - 0.00 in Rain Light Rain
8:56 AM 82.9 °F 89.4 °F 73.9 °F 74% 29.95 in 10.0 mi SE 4.6 mph - 0.00 in   Scattered Clouds
9:56 AM 82.9 °F 89.4 °F 73.9 °F 74% 29.95 in 10.0 mi East 9.2 mph - N/A   Scattered Clouds
10:56 AM 84.0 °F 91.9 °F 75.0 °F 74% 29.94 in 10.0 mi ENE 11.5 mph - 0.01 in   Scattered Clouds
11:56 AM 86.0 °F 93.8 °F 73.9 °F 67% 29.91 in 10.0 mi ENE 15.0 mph - N/A   Scattered Clouds
12:56 PM 87.1 °F 95.4 °F 73.9 °F 65% 29.88 in 10.0 mi ENE 16.1 mph - N/A   Scattered Clouds
1:56 PM 86.0 °F 93.8 °F 73.9 °F 67% 29.86 in 10.0 mi ENE 16.1 mph - N/A   Scattered Clouds
2:56 PM 86.0 °F 93.8 °F 73.9 °F 67% 29.84 in 10.0 mi ENE 18.4 mph - N/A   Scattered Clouds
3:56 PM 84.9 °F 91.4 °F 73.0 °F 67% 29.84 in 10.0 mi East 12.7 mph - N/A   Scattered Clouds
4:56 PM 82.9 °F 88.0 °F 72.0 °F 69% 29.85 in 10.0 mi East 16.1 mph - N/A   Scattered Clouds
5:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 29.85 in 10.0 mi East 9.2 mph - N/A   Scattered Clouds
6:56 PM 81.0 °F 86.2 °F 73.9 °F 79% 29.87 in 10.0 mi East 8.1 mph - 0.01 in   Scattered Clouds
7:56 PM 81.0 °F 86.2 °F 73.9 °F 79% 29.88 in 10.0 mi East 6.9 mph - N/A   Partly Cloudy
8:56 PM 80.1 °F 84.5 °F 73.9 °F 81% 29.90 in 10.0 mi ESE 3.5 mph - N/A   Partly Cloudy
9:56 PM 80.1 °F 84.2 °F 73.0 °F 79% 29.91 in 10.0 mi East 4.6 mph - N/A   Scattered Clouds
10:56 PM 79.0 °F - 73.0 °F 82% 29.91 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:56 PM 79.0 °F - 73.9 °F 84% 29.90 in 10.0 mi Calm Calm - N/A   Scattered Clouds